本文整理汇总了C++中GetDIBits函数的典型用法代码示例。如果您正苦于以下问题:C++ GetDIBits函数的具体用法?C++ GetDIBits怎么用?C++ GetDIBits使用的例子?那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。
在下文中一共展示了GetDIBits函数的20个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于我们的系统推荐出更棒的C++代码示例。
示例1: CopyScreenToBitmap
HBITMAP CopyScreenToBitmap(LPRECT lpRect, BYTE *pData, BITMAPINFO *pHeader)
{
HDC hScrDC, hMemDC; // screen DC and memory DC
HBITMAP hBitmap, hOldBitmap; // handles to deice-dependent bitmaps
int nX, nY, nX2, nY2; // coordinates of rectangle to grab
int nWidth, nHeight; // DIB width and height
int xScrn, yScrn; // screen resolution
// check for an empty rectangle
if (IsRectEmpty(lpRect))
return NULL;
// create a DC for the screen and create
// a memory DC compatible to screen DC
hScrDC = CreateDC(TEXT("DISPLAY"), NULL, NULL, NULL);
hMemDC = CreateCompatibleDC(hScrDC);
// get points of rectangle to grab
nX = lpRect->left;
nY = lpRect->top;
nX2 = lpRect->right;
nY2 = lpRect->bottom;
// get screen resolution
xScrn = GetDeviceCaps(hScrDC, HORZRES);
yScrn = GetDeviceCaps(hScrDC, VERTRES);
//make sure bitmap rectangle is visible
if (nX < 0)
nX = 0;
if (nY < 0)
nY = 0;
if (nX2 > xScrn)
nX2 = xScrn;
if (nY2 > yScrn)
nY2 = yScrn;
nWidth = nX2 - nX;
nHeight = nY2 - nY;
// create a bitmap compatible with the screen DC
hBitmap = CreateCompatibleBitmap(hScrDC, nWidth, nHeight);
// select new bitmap into memory DC
hOldBitmap = (HBITMAP) SelectObject(hMemDC, hBitmap);
// bitblt screen DC to memory DC
BitBlt(hMemDC, 0, 0, nWidth, nHeight, hScrDC, nX, nY, SRCCOPY);
// select old bitmap back into memory DC and get handle to
// bitmap of the screen
hBitmap = (HBITMAP) SelectObject(hMemDC, hOldBitmap);
// Copy the bitmap data into the provided BYTE buffer
GetDIBits(hScrDC, hBitmap, 0, nHeight, pData, pHeader, DIB_RGB_COLORS);
// clean up
DeleteDC(hScrDC);
DeleteDC(hMemDC);
// return handle to the bitmap
return hBitmap;
}
开发者ID:Essjay1,项目名称:Windows-classic-samples,代码行数:63,代码来源:DibHelper.cpp
示例2: memset
QPixmap QPixmap::fromWinHBITMAP(HBITMAP bitmap, HBitmapFormat format)
{
// Verify size
BITMAP bitmap_info;
memset(&bitmap_info, 0, sizeof(BITMAP));
int res = GetObject(bitmap, sizeof(BITMAP), &bitmap_info);
if (!res) {
qErrnoWarning("QPixmap::fromWinHBITMAP(), failed to get bitmap info");
return QPixmap();
}
int w = bitmap_info.bmWidth;
int h = bitmap_info.bmHeight;
BITMAPINFO bmi;
memset(&bmi, 0, sizeof(bmi));
bmi.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
bmi.bmiHeader.biWidth = w;
bmi.bmiHeader.biHeight = -h;
bmi.bmiHeader.biPlanes = 1;
bmi.bmiHeader.biBitCount = 32;
bmi.bmiHeader.biCompression = BI_RGB;
bmi.bmiHeader.biSizeImage = w * h * 4;
QImage result;
// Get bitmap bits
uchar *data = (uchar *) qMalloc(bmi.bmiHeader.biSizeImage);
HDC display_dc = GetDC(0);
if (GetDIBits(display_dc, bitmap, 0, h, data, &bmi, DIB_RGB_COLORS)) {
QImage::Format imageFormat = QImage::Format_ARGB32_Premultiplied;
uint mask = 0;
if (format == NoAlpha) {
imageFormat = QImage::Format_RGB32;
mask = 0xff000000;
}
// Create image and copy data into image.
QImage image(w, h, imageFormat);
if (!image.isNull()) { // failed to alloc?
int bytes_per_line = w * sizeof(QRgb);
for (int y=0; y<h; ++y) {
QRgb *dest = (QRgb *) image.scanLine(y);
const QRgb *src = (const QRgb *) (data + y * bytes_per_line);
for (int x=0; x<w; ++x) {
const uint pixel = src[x];
if ((pixel & 0xff000000) == 0 && (pixel & 0x00ffffff) != 0)
dest[x] = pixel | 0xff000000;
else
dest[x] = pixel | mask;
}
}
}
result = image;
} else {
qWarning("QPixmap::fromWinHBITMAP(), failed to get bitmap bits");
}
ReleaseDC(0, display_dc);
qFree(data);
return fromImage(result);
}
开发者ID:phen89,项目名称:rtqt,代码行数:62,代码来源:qpixmap_win.cpp
示例3: createBMPFile
void createBMPFile(LPTSTR pszFile, PBITMAPINFO pbi,
HBITMAP hBMP, HDC hDC)
{
HANDLE hf; // file handle
BITMAPFILEHEADER hdr; // bitmap file-header
PBITMAPINFOHEADER pbih; // bitmap info-header
LPBYTE lpBits; // memory pointer
DWORD dwTotal; // total count of bytes
DWORD cb; // incremental count of bytes
BYTE *hp; // byte pointer
DWORD dwTmp;
pbih = (PBITMAPINFOHEADER) pbi;
lpBits = (LPBYTE) GlobalAlloc(GMEM_FIXED, pbih->biSizeImage);
if (!lpBits)
throw "Global alloc error";
// Retrieve the color table (RGBQUAD array) and the bits
// (array of palette indices) from the DIB.
if (!GetDIBits(hDC, hBMP, 0, (WORD) pbih->biHeight, lpBits, pbi,
DIB_RGB_COLORS))
{
throw "GetDIBits error";
}
// Create the .BMP file.
hf = CreateFile(pszFile,
GENERIC_READ | GENERIC_WRITE,
(DWORD) 0,
NULL,
CREATE_ALWAYS,
FILE_ATTRIBUTE_NORMAL,
(HANDLE) NULL);
if (hf == INVALID_HANDLE_VALUE)
throw "CreateFile error";
hdr.bfType = 0x4d42; // 0x42 = "B" 0x4d = "M"
// Compute the size of the entire file.
hdr.bfSize = (DWORD) (sizeof(BITMAPFILEHEADER) +
pbih->biSize + pbih->biClrUsed
* sizeof(RGBQUAD) + pbih->biSizeImage);
hdr.bfReserved1 = 0;
hdr.bfReserved2 = 0;
// Compute the offset to the array of color indices.
hdr.bfOffBits = (DWORD) sizeof(BITMAPFILEHEADER) +
pbih->biSize + pbih->biClrUsed
* sizeof (RGBQUAD);
// Copy the BITMAPFILEHEADER into the .BMP file.
if (!WriteFile(hf, (LPVOID) &hdr, sizeof(BITMAPFILEHEADER),
(LPDWORD) &dwTmp, NULL))
{
throw "WriteFile error 1";
}
// Copy the BITMAPINFOHEADER and RGBQUAD array into the file.
if (!WriteFile(hf, (LPVOID) pbih, sizeof(BITMAPINFOHEADER)
+ pbih->biClrUsed * sizeof (RGBQUAD),
(LPDWORD) &dwTmp, ( NULL)) )
throw "WriteFile error 2";
// Copy the array of color indices into the .BMP file.
dwTotal = cb = pbih->biSizeImage;
hp = lpBits;
if (!WriteFile(hf, (LPSTR) hp, (int) cb, (LPDWORD) &dwTmp,NULL))
throw "WriteFile error 3";
// Close the .BMP file.
if (!CloseHandle(hf))
throw "CloseFile error";
// Free memory.
GlobalFree((HGLOBAL)lpBits);
}
开发者ID:derekqian,项目名称:GPUSim_ATTILA,代码行数:78,代码来源:WriteBMP.cpp
示例4: MFDRV_StretchBlt
BOOL MFDRV_StretchBlt( PHYSDEV devDst, INT xDst, INT yDst, INT widthDst,
INT heightDst, PHYSDEV devSrc, INT xSrc, INT ySrc,
INT widthSrc, INT heightSrc, DWORD rop )
{
BOOL ret;
DWORD len;
METARECORD *mr;
BITMAP BM;
METAFILEDRV_PDEVICE *physDevSrc = (METAFILEDRV_PDEVICE *)devSrc;
#ifdef STRETCH_VIA_DIB
LPBITMAPINFOHEADER lpBMI;
WORD nBPP;
#endif
HBITMAP hBitmap = GetCurrentObject(physDevSrc->hdc, OBJ_BITMAP);
if (GetObjectW(hBitmap, sizeof(BITMAP), &BM) != sizeof(BITMAP))
{
WARN("bad bitmap object %p passed for hdc %p\n", hBitmap, physDevSrc->hdc);
return FALSE;
}
#ifdef STRETCH_VIA_DIB
nBPP = BM.bmPlanes * BM.bmBitsPixel;
if(nBPP > 8) nBPP = 24; /* FIXME Can't get 16bpp to work for some reason */
len = sizeof(METARECORD) + 10 * sizeof(INT16)
+ sizeof(BITMAPINFOHEADER) + (nBPP <= 8 ? 1 << nBPP: 0) * sizeof(RGBQUAD)
+ DIB_GetDIBWidthBytes(BM.bmWidth, nBPP) * BM.bmHeight;
if (!(mr = HeapAlloc( GetProcessHeap(), 0, len)))
return FALSE;
mr->rdFunction = META_DIBSTRETCHBLT;
lpBMI=(LPBITMAPINFOHEADER)(mr->rdParm+10);
lpBMI->biSize = sizeof(BITMAPINFOHEADER);
lpBMI->biWidth = BM.bmWidth;
lpBMI->biHeight = BM.bmHeight;
lpBMI->biPlanes = 1;
lpBMI->biBitCount = nBPP;
lpBMI->biSizeImage = DIB_GetDIBWidthBytes(BM.bmWidth, nBPP) * lpBMI->biHeight;
lpBMI->biClrUsed = nBPP <= 8 ? 1 << nBPP : 0;
lpBMI->biCompression = BI_RGB;
lpBMI->biXPelsPerMeter = MulDiv(GetDeviceCaps(physDevSrc->hdc,LOGPIXELSX),3937,100);
lpBMI->biYPelsPerMeter = MulDiv(GetDeviceCaps(physDevSrc->hdc,LOGPIXELSY),3937,100);
lpBMI->biClrImportant = 0; /* 1 meter = 39.37 inch */
TRACE("MF_StretchBltViaDIB->len = %ld rop=%lx PixYPM=%ld Caps=%d\n",
len,rop,lpBMI->biYPelsPerMeter,GetDeviceCaps(physDevSrc->hdc, LOGPIXELSY));
if (GetDIBits(physDevSrc->hdc, hBitmap, 0, (UINT)lpBMI->biHeight,
(LPSTR)lpBMI + DIB_BitmapInfoSize( (BITMAPINFO *)lpBMI,
DIB_RGB_COLORS ),
(LPBITMAPINFO)lpBMI, DIB_RGB_COLORS))
#else
len = sizeof(METARECORD) + 15 * sizeof(INT16) + BM.bmWidthBytes * BM.bmHeight;
if (!(mr = HeapAlloc( GetProcessHeap(), 0, len )))
return FALSE;
mr->rdFunction = META_STRETCHBLT;
*(mr->rdParm +10) = BM.bmWidth;
*(mr->rdParm +11) = BM.bmHeight;
*(mr->rdParm +12) = BM.bmWidthBytes;
*(mr->rdParm +13) = BM.bmPlanes;
*(mr->rdParm +14) = BM.bmBitsPixel;
TRACE("len = %ld rop=%lx\n", len, rop);
if (GetBitmapBits( hBitmap, BM.bmWidthBytes * BM.bmHeight, mr->rdParm + 15))
#endif
{
mr->rdSize = len / sizeof(INT16);
*(mr->rdParm) = LOWORD(rop);
*(mr->rdParm + 1) = HIWORD(rop);
*(mr->rdParm + 2) = heightSrc;
*(mr->rdParm + 3) = widthSrc;
*(mr->rdParm + 4) = ySrc;
*(mr->rdParm + 5) = xSrc;
*(mr->rdParm + 6) = heightDst;
*(mr->rdParm + 7) = widthDst;
*(mr->rdParm + 8) = yDst;
*(mr->rdParm + 9) = xDst;
ret = MFDRV_WriteRecord( devDst, mr, mr->rdSize * 2);
}
else
ret = FALSE;
HeapFree( GetProcessHeap(), 0, mr);
return ret;
}
开发者ID:howard5888,项目名称:wineT,代码行数:81,代码来源:bitblt.c
示例5: BugDlg_CompressScreenshot
//-----------------------------------------------------------------------------
// BugDlg_CompressScreenshot
//
// Compress .BMP to .JPG, Delete .BMP
//-----------------------------------------------------------------------------
bool BugDlg_CompressScreenshot()
{
if ( !g_bug_szScreenshot[0] )
{
return false;
}
bool bSuccess = false;
HBITMAP hBitmap = NULL;
HDC hDC = NULL;
char *pBMPBits = NULL;
CUtlBuffer buf( 0, 0 );
hBitmap = (HBITMAP)LoadImage( NULL, g_bug_szScreenshot, IMAGE_BITMAP, 0, 0, LR_CREATEDIBSECTION | LR_DEFAULTSIZE | LR_LOADFROMFILE );
if ( !hBitmap )
goto cleanUp;
hDC = CreateCompatibleDC( NULL );
if ( !hDC )
goto cleanUp;
BITMAPINFO bitmapInfo;
ZeroMemory( &bitmapInfo, sizeof( BITMAPINFO ) );
bitmapInfo.bmiHeader.biSize = sizeof( BITMAPINFOHEADER );
// populate the bmp info
if ( !GetDIBits( hDC, hBitmap, 0, 0, NULL, &bitmapInfo, DIB_RGB_COLORS ) )
goto cleanUp;
pBMPBits = (char *)Sys_Alloc( bitmapInfo.bmiHeader.biSizeImage );
if ( !pBMPBits )
goto cleanUp;
// could be bottom-up or top-down
int nHeight = abs( bitmapInfo.bmiHeader.biHeight );
if ( bitmapInfo.bmiHeader.biBitCount != 32 )
{
// unexpected format
goto cleanUp;
}
if ( bitmapInfo.bmiHeader.biCompression != BI_RGB && bitmapInfo.bmiHeader.biCompression != BI_BITFIELDS )
{
// unexpected format
goto cleanUp;
}
// don't want color masks
bitmapInfo.bmiHeader.biCompression = BI_RGB;
// get the raw bits
if ( !GetDIBits( hDC, hBitmap, 0, nHeight, pBMPBits, &bitmapInfo, DIB_RGB_COLORS ) )
goto cleanUp;
JSAMPROW row_pointer[1];
// compression data structure
struct jpeg_compress_struct cinfo;
ZeroMemory( &cinfo, sizeof( jpeg_compress_struct ) );
// point at stderr
struct jpeg_error_mgr jerr;
cinfo.err = jpeg_std_error( &jerr );
// create compressor
jpeg_create_compress( &cinfo );
// Hook CUtlBuffer to compression
jpeg_UtlBuffer_dest( &cinfo, &buf );
// image width and height, in pixels
cinfo.image_width = bitmapInfo.bmiHeader.biWidth;
cinfo.image_height = nHeight;
cinfo.input_components = 3;
cinfo.in_color_space = JCS_RGB;
// Apply settings
jpeg_set_defaults( &cinfo );
jpeg_set_quality( &cinfo, 50, TRUE );
// Start compressor
jpeg_start_compress( &cinfo, TRUE);
char *pRowBuffer = (char*)_alloca( bitmapInfo.bmiHeader.biWidth * 3 );
row_pointer[0] = (JSAMPROW)pRowBuffer;
// Write scanlines
while ( cinfo.next_scanline < cinfo.image_height )
{
char *pSrc;
if ( bitmapInfo.bmiHeader.biHeight < 0 )
{
// top down
//.........这里部分代码省略.........
开发者ID:DeadZoneLuna,项目名称:SourceEngine2007,代码行数:101,代码来源:bug.cpp
示例6: GetDesktopWindow
//.........这里部分代码省略.........
if (fm) {
x += 1;
}
y = topLeftY - textMetric.tmAscent;
err = ExtTextOutW(hMemoryDC, x, y, ETO_GLYPH_INDEX|ETO_OPAQUE,
(LPRECT)&rect, (LPCWSTR)&glyphCode, 1, NULL);
if (err == 0) {
FREE_AND_RETURN;
}
/* Now get the image into a DIB.
* MS docs for GetDIBits says the compatible bitmap must not be
* selected into a DC, so restore the original first.
*/
SelectObject(hMemoryDC, hOrigBM);
SelectObject(hMemoryDC, oldFont);
DeleteObject(hFont);
memset(&bmi, 0, sizeof(BITMAPINFO));
bmi.bmiHeader.biSize = sizeof(bmi.bmiHeader);
bmi.bmiHeader.biWidth = width;
bmi.bmiHeader.biHeight = -height;
bmi.bmiHeader.biPlanes = 1;
bmi.bmiHeader.biBitCount = 24;
bmi.bmiHeader.biCompression = BI_RGB;
dibImage = SAFE_SIZE_ARRAY_ALLOC(malloc, dibBytesWidth, height);
if (dibImage == NULL) {
FREE_AND_RETURN;
}
dibImageSize = dibBytesWidth*height;
memset(dibImage, 0, dibImageSize);
err = GetDIBits(hMemoryDC, hBitmap, 0, height, dibImage,
&bmi, DIB_RGB_COLORS);
if (err == 0) { /* GetDIBits failed. */
FREE_AND_RETURN;
}
err = SystemParametersInfo(SPI_GETFONTSMOOTHINGORIENTATION, 0, &orient, 0);
if (err == 0) {
FREE_AND_RETURN;
}
err = SystemParametersInfo(SPI_GETFONTSMOOTHINGCONTRAST, 0, &gamma, 0);
if (err == 0) {
FREE_AND_RETURN;
}
igTable = getIGTable(gamma/10);
if (igTable == NULL) {
FREE_AND_RETURN;
}
/* Now copy glyph image into a GlyphInfo structure and return it.
* NB the xadvance calculated here may be overwritten by the caller.
* 1 is subtracted from the bitmap width to get the glyph width, since
* that extra "1" was added as padding, so the sub-pixel positioning of
* fractional metrics could index into it.
*/
glyphInfo = (GlyphInfo*)SAFE_SIZE_STRUCT_ALLOC(malloc, sizeof(GlyphInfo),
bytesWidth, height);
if (glyphInfo == NULL) {
FREE_AND_RETURN;
}
imageSize = bytesWidth*height;
glyphInfo->cellInfo = NULL;
开发者ID:sakeinntojiu,项目名称:openjdk8-jdk,代码行数:67,代码来源:lcdglyph.c
示例7: winQueryScreenDIBFormat
static
Bool
winQueryScreenDIBFormat (ScreenPtr pScreen, BITMAPINFOHEADER *pbmih)
{
winScreenPriv(pScreen);
HBITMAP hbmp;
#if CYGDEBUG
LPDWORD pdw = NULL;
#endif
/* Create a memory bitmap compatible with the screen */
hbmp = CreateCompatibleBitmap (pScreenPriv->hdcScreen, 1, 1);
if (hbmp == NULL)
{
ErrorF ("winQueryScreenDIBFormat - CreateCompatibleBitmap failed\n");
return FALSE;
}
/* Initialize our bitmap info header */
ZeroMemory (pbmih, sizeof (BITMAPINFOHEADER) + 256 * sizeof (RGBQUAD));
pbmih->biSize = sizeof (BITMAPINFOHEADER);
/* Get the biBitCount */
if (!GetDIBits (pScreenPriv->hdcScreen,
hbmp,
0, 1,
NULL,
(BITMAPINFO*) pbmih,
DIB_RGB_COLORS))
{
ErrorF ("winQueryScreenDIBFormat - First call to GetDIBits failed\n");
DeleteObject (hbmp);
return FALSE;
}
#if CYGDEBUG
/* Get a pointer to bitfields */
pdw = (DWORD*) ((CARD8*)pbmih + sizeof (BITMAPINFOHEADER));
winDebug ("winQueryScreenDIBFormat - First call masks: %08x %08x %08x\n",
pdw[0], pdw[1], pdw[2]);
#endif
/* Get optimal color table, or the optimal bitfields */
if (!GetDIBits (pScreenPriv->hdcScreen,
hbmp,
0, 1,
NULL,
(BITMAPINFO*)pbmih,
DIB_RGB_COLORS))
{
ErrorF ("winQueryScreenDIBFormat - Second call to GetDIBits "
"failed\n");
DeleteObject (hbmp);
return FALSE;
}
/* Free memory */
DeleteObject (hbmp);
return TRUE;
}
开发者ID:Agnarr,项目名称:xserver,代码行数:62,代码来源:winshadgdi.c
示例8: WndProc
LRESULT CALLBACK WndProc( HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam )
{
switch( uMsg )
{
case WM_COMMAND :
switch( LOWORD( wParam ) )
{
case IDM_TEST :
{
BITMAPINFOHEADER bi;
BITMAPINFOHEADER* lpbi;
HBITMAP hBitmap;
HDC hDC, hMemDC;
HANDLE hDIB;
// Initialize the BITMAPINFOHEADER structure.
//...........................................
bi.biSize = sizeof( BITMAPINFOHEADER );
bi.biWidth = 50;
bi.biHeight = 50;
bi.biPlanes = 1;
bi.biBitCount = 4;
bi.biCompression = BI_RGB;
bi.biSizeImage = 0;
bi.biXPelsPerMeter = 0;
bi.biYPelsPerMeter = 0;
bi.biClrUsed = 0;
bi.biClrImportant = 0;
hDC = GetDC( hWnd );
// Create DIB.
//............
hBitmap = CreateDIBitmap( hDC, &bi, 0L, NULL,
NULL, 0 );
// Allocate memory for BITMAPINFO structure.
//..........................................
hDIB = GlobalAlloc( GHND,
sizeof( BITMAPINFOHEADER )+
16 * sizeof( RGBQUAD ) );
lpbi = (BITMAPINFOHEADER*)GlobalLock( hDIB );
// Copy bi to top of BITMAPINFO structure.
//........................................
*lpbi = bi;
// Use GetDIBits() to init bi struct data.
//........................................
GetDIBits( hDC, hBitmap, 0, 50, NULL,
(LPBITMAPINFO)lpbi, DIB_RGB_COLORS );
GlobalUnlock( hDIB );
// Create a memory device context
// and select the DIB into it.
//...............................
hMemDC = CreateCompatibleDC( hDC );
SelectObject( hMemDC, hBitmap );
// Paint on memory device context.
//................................
SelectObject( hMemDC, GetStockObject(BLACK_BRUSH));
Rectangle( hMemDC, 0, 0, 50, 50 );
SelectObject( hMemDC, GetStockObject(WHITE_BRUSH));
Ellipse( hMemDC, 0, 0, 50, 50 );
Ellipse( hMemDC, 10, 0, 40, 50 );
Ellipse( hMemDC, 20, 0, 30, 50 );
// Paint the bitmap on the display.
//.................................
BitBlt( hDC, 0, 0, 50, 50,
hMemDC, 0, 0, SRCCOPY );
DeleteDC( hMemDC );
GlobalFree( hDIB );
ReleaseDC( hWnd, hDC );
}
break;
case IDM_ABOUT :
DialogBox( hInst, "AboutBox", hWnd, (DLGPROC)About );
break;
case IDM_EXIT :
DestroyWindow( hWnd );
break;
}
break;
case WM_DESTROY :
PostQuitMessage(0);
break;
default :
return( DefWindowProc( hWnd, uMsg, wParam, lParam ) );
}
return( 0L );
//.........这里部分代码省略.........
开发者ID:d4nie1,项目名称:TotulDespreCPP,代码行数:101,代码来源:Create_DIB_Bitmap.cpp
示例9: TextProcessor
static void TextProcessor(INT hdlImage,CHAR *lpText)
{
BYTE *lp;
CHAR szTesto[1024];
POINT pt;
IMGHEADER *Img;
HDC hDC,hDClone;
HBITMAP hbCopy;
BYTE *lpSorg;
INT iLx,iLy;
BITMAPINFOHEADER *BmpHeader;
BITMAPINFO *BmpInfo;
INT iAlt=12;
INT iCol1=0;
INT iCol2=-1;
BOOL fBold=FALSE;
// ----------------------------------------------------------------------------
// Creo una zona di memoria tipo video delle dimensioni dell'immagine
//
//memcpy(&ImgHeader,memoLock(hdlImage),sizeof(IMGHEADER));
printf("Elaborazione TextProcessor [%s]" CRLF,lpText); //Sleep(2000);
//ehLogWrite("> %s" CRLF,lpText);
if (!*lpText) return;
Img=memoLock(hdlImage);
BmpInfo=(BITMAPINFO *) &Img->bmiHeader;
BmpHeader=(BITMAPINFOHEADER *) &Img->bmiHeader;
iLy=BmpHeader->biHeight; if (iLy<0) iLy=-BmpHeader->biHeight;
iLx=BmpHeader->biWidth;
hDC=GetDC(NULL); hDClone=CreateCompatibleDC(hDC);
SetMapMode(hDClone, MM_TEXT);
hbCopy = CreateCompatibleBitmap(hDC, iLx, iLy);
SelectObject(hDClone, hbCopy);
ReleaseDC(NULL,hDC);
lpSorg=(BYTE *) Img; lpSorg+=Img->Offset;
// Scrivo l'immagine in questa zona di memoria
if (StretchDIBits(hDClone,
// Coordinate e dimensioni di stampa a video
0,0,
iLx,
iLy,
// Coordinate e dimensioni di lettura nel sorgente
0,
iLy+1,
iLx,
-iLy,
lpSorg,
(BITMAPINFO *) &Img->bmiHeader,
DIB_RGB_COLORS,
SRCCOPY) == GDI_ERROR) {printf("StretchDIBits Failed");}
// Ci faccio quello che ci devo fare con i comandi
lp=strtok(lpText,"|");
*szTesto=0;
ZeroFill(pt);
while (lp)
{
//printf("[%s]" CRLF,lp);
if (!memcmp(lp,"TEXT=",5)) strcpy(szTesto,lp+5);
if (!memcmp(lp,"PX=",3)) pt.x=atoi(lp+3);
if (!memcmp(lp,"PY=",3)) pt.y=atoi(lp+3);
if (!memcmp(lp,"ALT=",3)) iAlt=atoi(lp+3);
if (!memcmp(lp,"COL=",4)) iCol1=ColorConvert(lp+4);
if (!memcmp(lp,"BG=",3)) iCol2=ColorConvert(lp+3);
if (!memcmp(lp,"BOLD=",5)) fBold=atoi(lp+5);
if (*lp=='*')
{
//printf("Stampo: %d,%d,%s" CRLF,pt.x,pt.y,szTesto);
//ehLogWrite("Stampo: %d,%d,%s",pt.x,pt.y,szTesto);
LPrint(hDClone,pt.x,pt.y,iCol1,iCol2,"Arial",iAlt,fBold,szTesto);
}
lp=strtok(NULL,"|");
}
// Mi riprendo la zona di memoria video e la rimetto nell'immagine
//BmpHeader->biHeight*=-1;
GetDIBits(
hDClone, // handle to device context
hbCopy, // handle to bitmap
0, // first scan line to set in destination bitmap
iLy, // number of scan lines to copy
lpSorg, // address of array for bitmap bits
(BITMAPINFO *) &Img->bmiHeader, // address of structure with bitmap data
DIB_RGB_COLORS // RGB or palette index
);
if (!DeleteDC(hDClone))
{
ehLogWrite("Errore in cancellazione DC %d",GetLastError());
ehExit("Errore in cancellazione DC");
}
//.........这里部分代码省略.........
开发者ID:ferrasrl,项目名称:easyHand,代码行数:101,代码来源:imgResizer.c
示例10: plogpal
void PLWEMFDecoder::GetImage (PLBmpBase & Bmp)
{
HPALETTE hpal = NULL;
LPLOGPALETTE plogpal (0);
if (GetBitsPerPixel() == 8) {
plogpal = (LPLOGPALETTE)new PLBYTE[sizeof(LOGPALETTE) + (sizeof(PALETTEENTRY) * 256)];
memset(plogpal,0x0,sizeof(LOGPALETTE) + sizeof(PALETTEENTRY)*256);
plogpal->palVersion = 0x300;
plogpal->palNumEntries = 256;
if (plogpal == NULL) {
PLASSERT(false);
raiseError (PL_ERRNO_MEMORY,"Cannot allocate palette.");
}
UINT pe = GetEnhMetaFilePaletteEntries(m_hemf, 0, NULL);
GetEnhMetaFilePaletteEntries(m_hemf, pe, plogpal->palPalEntry);
}
// Setup a logical palette for our memory dc and also a
// paintlib compatible palette for the paintlib bitmap
PLPixel32 pPal[256];
if (plogpal) {
for (UINT i = 0; i < 256; i++) {
pPal[i] = *(PLPixel32*)&plogpal->palPalEntry[i];
}
if ((hpal = CreatePalette((LPLOGPALETTE)plogpal))) {
m_holdpal = SelectPalette(m_memdc, hpal, false);
RealizePalette(m_memdc);
}
Bmp.SetPalette(pPal);
delete [] plogpal;
}
// Play the metafile into the device context
// First, setup a bounding rectangle and fill
// the memory dc with white (some metafiles only
// use a black pen to draw and have no actual fill
// color set, This would cause a black on black
// painting which is rather useless
RECT rc;
rc.left = rc.top = 0;
rc.bottom = GetHeight();
rc.right = GetWidth();
FillRect(m_memdc,&rc,(HBRUSH)GetStockObject(WHITE_BRUSH));
// Heeere we go....
BOOL bres = PlayEnhMetaFile(m_memdc,m_hemf,&rc);
// Finally, convert the Windows bitmap into a paintlib bitmap
PLWinBmp& winbmp = dynamic_cast<PLWinBmp&>(Bmp);
BITMAPINFO* pBMI = (BITMAPINFO*)winbmp.GetBMI();
PLBYTE* pBits = (PLBYTE*)winbmp.GetBits();
if (GetBitsPerPixel() == 8) {
GetDIBits(m_dc, m_bm, 0, GetHeight(), winbmp.GetBits(), pBMI, DIB_RGB_COLORS);
}
else {
GetDIBits(m_dc, m_bm, 0, GetHeight(), winbmp.GetBits(), pBMI, DIB_PAL_COLORS);
}
}
开发者ID:JesperMikkelsen,项目名称:Big-Numbers,代码行数:61,代码来源:plwemfdec.cpp
示例11: CxImage
//////////////////////////////////////////////////////////////////////////////
// CMainFrame message handlers
void CMainFrame::OnEditPaste()
{
CDemoDoc *NewDoc=(CDemoDoc*)((CDemoApp*)AfxGetApp())->demoTemplate->OpenDocumentFile(NULL);
if (NewDoc)
{
if (OpenClipboard())
{
HANDLE hData=NULL;
if (hData = GetClipboardData(((CDemoApp*)AfxGetApp())->GetCF())){ //custom CxImage object
CxImage *newima = new CxImage();
DWORD dwSize = GlobalSize(hData);
if (dwSize) {
BYTE *lpVoid = (BYTE *)GlobalLock(hData);
newima->UnDump(lpVoid);
GlobalUnlock(lpVoid);
}
NewDoc->image = newima;
} else if (hData = GetClipboardData(CF_DIB)){ // check if bitmap
CxImage *newima = new CxImage();
newima->CreateFromHANDLE(hData);
NewDoc->image = newima;
} else {
#if CXIMAGE_SUPPORT_WMF
if (hData = GetClipboardData(CF_ENHMETAFILE)) //check if metafile
{
HENHMETAFILE hMeta = (HENHMETAFILE)hData;
ENHMETAHEADER emh;
GetEnhMetaFileHeader(hMeta, sizeof(emh), &emh);
int cx,cy;
cx = (int)((emh.rclBounds.right - emh.rclBounds.left)/2.54);
cy = (int)((emh.rclBounds.bottom - emh.rclBounds.top)/2.54);
HDC hDC0 = ::GetDC(0); // screen dc
HBITMAP hBitmap = CreateCompatibleBitmap(hDC0, cx, cy);
HDC hDC = CreateCompatibleDC(hDC0); // memory dc compatible with screen
::ReleaseDC(0, hDC0); // don't need anymore. get rid of it.
if (hDC && hBitmap){
RECT rc = {0,0,cx,cy};
int bpp = ::GetDeviceCaps(hDC, BITSPIXEL);
HBITMAP hBitmapOld = (HBITMAP)SelectObject(hDC, hBitmap);
// paint the background
DWORD dwBack = RGB(255, 255, 255); //GetSysColor(COLOR_WINDOW);
DWORD OldColor = SetBkColor(hDC, dwBack);
ExtTextOut(hDC, 0, 0, ETO_OPAQUE, &rc, NULL, 0, NULL);
SetBkColor(hDC, OldColor);
// Play the Metafile into Memory DC
BOOL bRet = PlayEnhMetaFile(hDC, hMeta, &rc);
SelectObject(hDC, hBitmapOld);
CxImage *newima = new CxImage();
if(bRet && newima->Create(cx, cy, bpp, CXIMAGE_FORMAT_WMF)){
bRet = GetDIBits(hDC, hBitmap, 0, (UINT)cy, newima->GetBits(),
(LPBITMAPINFO)newima->GetDIB(), DIB_RGB_COLORS);
NewDoc->image = newima;
}
else
{
delete newima;
}
}
if (hBitmap) DeleteObject(hBitmap);
if (hDC) DeleteDC(hDC);
}
#endif
}
}
CloseClipboard();
CString s;
s.Format(_T("Clipboard Image %d"),((CDemoApp*)AfxGetApp())->m_nDocCount++);
NewDoc->SetTitle(s);
NewDoc->UpdateAllViews(0,WM_USER_NEWIMAGE);
NewDoc->UpdateStatusBar();
}
}
开发者ID:Aliceljm1,项目名称:CxImageVS2010,代码行数:89,代码来源:MainFrm.cpp
示例12: HDumpGraf
/* EXPORT->HDumpGraf: dump a BMP image of current display into fname */
void HDumpGraf(char *fname)
{
BITMAPFILEHEADER FileHeader;
BITMAPINFOHEADER BitmapHeader;
BITMAPINFO *Info;
int ColorTableSize;
int ImageSize;
FILE *fp;
char *img;
HDC dc = GetDC(theWindow);
HBITMAP temp = CreateCompatibleBitmap(memDC,1,1);
SelectObject(memDC,temp);
/* retrieve information about the bitmap */
BitmapHeader.biSize = sizeof(BITMAPINFOHEADER);
BitmapHeader.biBitCount = 0;
GetDIBits(memDC,theBitmap,0,0,NULL,&BitmapHeader,BI_RGB);
switch (BitmapHeader.biCompression) {
case BI_RGB:
if (BitmapHeader.biBitCount > 8) {
ColorTableSize = 0;
}
else {
ColorTableSize = BitmapHeader.biClrUsed*sizeof(RGBQUAD);
}
break;
case BI_RLE8:
case BI_RLE4:
ColorTableSize = BitmapHeader.biClrUsed*sizeof(RGBQUAD);
break;
case BI_BITFIELDS:
ColorTableSize = 3*sizeof(DWORD);
}
Info = (BITMAPINFO *) New(&gcheap,sizeof(BITMAPINFOHEADER) + ColorTableSize);
memcpy(Info,&BitmapHeader,sizeof(BITMAPINFOHEADER));
ImageSize = BitmapHeader.biSizeImage;
img = New(&gcheap,ImageSize);
GetDIBits(memDC,theBitmap,0,ClientRect.bottom,img,Info,BI_RGB);
FileHeader.bfType = 0x4d42; /* 'BM' */
FileHeader.bfSize = sizeof(BITMAPINFOHEADER) + sizeof(BITMAPFILEHEADER) +
ImageSize + ColorTableSize;
FileHeader.bfReserved1 = FileHeader.bfReserved2 = 0;
FileHeader.bfOffBits = sizeof(BITMAPFILEHEADER) + sizeof(BITMAPINFOHEADER) + ColorTableSize;
fp = fopen(fname,"wb");
fwrite(&FileHeader,1,sizeof(BITMAPFILEHEADER),fp);
fwrite(Info,1,sizeof(BITMAPINFOHEADER) + ColorTableSize,fp);
fwrite(img,1,ImageSize,fp);
fclose(fp);
SelectObject(memDC,theBitmap);
DeleteObject(temp);
Dispose(&gcheap,Info);
Dispose(&gcheap,img);
}
开发者ID:botonchou,项目名称:AlgoFinal,代码行数:62,代码来源:HGraf_WIN32.c
示例13: sizeof
HBITMAP MonitorImageSource::GetImage(int width, int height)
{
DISPLAY_DEVICE named_device;
named_device.cb = sizeof(DISPLAY_DEVICE);
for (int deviceId = 0;;deviceId++) {
DISPLAY_DEVICE device;
device.cb = sizeof(DISPLAY_DEVICE);
BOOL result = ::EnumDisplayDevices(NULL, deviceId, &device, 0);
if (result == 0) break;
if (device.StateFlags & DISPLAY_DEVICE_ATTACHED_TO_DESKTOP) {
result = ::EnumDisplayDevices(device.DeviceName, 0, &named_device, 0);
}
}
HBITMAP hbmScreen = NULL;
BITMAP bmpScreen;
// Retrieve the handle to a display device context for the client
// area of the window.
Win32::DisplayDeviceContext hdcScreen("DISPLAY");
Win32::WindowDeviceContext hdcWindow(::GetDesktopWindow());
// Create a compatible DC which is used in a BitBlt from the window DC
Win32::MemoryDeviceContext hdcMemDC(hdcWindow);
//This is the best stretch mode
::SetStretchBltMode(hdcWindow,HALFTONE);
//The source DC is the entire screen and the destination DC is the current window (HWND)
if(!::StretchBlt(hdcWindow,
0,0, width, height,
hdcScreen,
0, 0,
GetSystemMetrics(SM_CXVIRTUALSCREEN),
GetSystemMetrics(SM_CYVIRTUALSCREEN),
SRCCOPY))
{
}
// Create a compatible bitmap from the Window DC
hbmScreen = CreateCompatibleBitmap(hdcWindow, width, height);
if(!hbmScreen)
{
//TODO: Error handling
}
// Select the compatible bitmap into the compatible memory DC.
SelectObject(hdcMemDC,hbmScreen);
// Bit block transfer into our compatible memory DC.
if(!BitBlt(hdcMemDC,
0,0, width, height,
hdcWindow,
0,0,
SRCCOPY))
{
//TODO: Error handling
}
// Get the BITMAP from the HBITMAP
GetObject(hbmScreen,sizeof(BITMAP),&bmpScreen);
BITMAPFILEHEADER bmfHeader;
BITMAPINFOHEADER bi;
bi.biSize = sizeof(BITMAPINFOHEADER);
bi.biWidth = bmpScreen.bmWidth;
bi.biHeight = bmpScreen.bmHeight;
bi.biPlanes = 1;
bi.biBitCount = 32;
bi.biCompression = BI_RGB;
bi.biSizeImage = 0;
bi.biXPelsPerMeter = 0;
bi.biYPelsPerMeter = 0;
bi.biClrUsed = 0;
bi.biClrImportant = 0;
DWORD dwBmpSize = ((bmpScreen.bmWidth * bi.biBitCount + 31) / 32) * 4 * bmpScreen.bmHeight;
// Starting with 32-bit Windows, GlobalAlloc and LocalAlloc are implemented as wrapper functions that
// call HeapAlloc using a handle to the process's default heap. Therefore, GlobalAlloc and LocalAlloc
// have greater overhead than HeapAlloc.
HANDLE hDIB = GlobalAlloc(GHND,dwBmpSize);
char *lpbitmap = (char *)GlobalLock(hDIB);
// Gets the "bits" from the bitmap and copies them into a buffer
// which is pointed to by lpbitmap.
GetDIBits(hdcWindow, hbmScreen, 0,
(UINT)bmpScreen.bmHeight,
lpbitmap,
(BITMAPINFO *)&bi, DIB_RGB_COLORS);
// A file is created, this is where we will save the screen capture.
HANDLE hFile = CreateFile(L"captureqwsx.bmp",
GENERIC_WRITE,
0,
NULL,
//.........这里部分代码省略.........
开发者ID:bstewart00,项目名称:remote-screen,代码行数:101,代码来源:MonitorImageSource.cpp
示例14: fbx_init
int fbx_init(fbx_struct *fb, fbx_wh wh, int width_, int height_, int useShm)
{
int width, height;
int rmask, gmask, bmask, ps, i;
#ifdef _WIN32
BMINFO bminfo; HBITMAP hmembmp=0; RECT rect; HDC hdc=NULL;
#else
XWindowAttributes xwa; int shmok=1, alphaFirst, pixmap=0;
#endif
if(!fb) _throw("Invalid argument");
#ifdef _WIN32
if(!wh) _throw("Invalid argument");
_w32(GetClientRect(wh, &rect));
if(width_>0) width=width_;
else
{
width=rect.right-rect.left; if(width<=0) width=MINWIDTH;
}
if(height_>0) height=height_;
else
{
height=rect.bottom-rect.top; if(height<=0) height=MINHEIGHT;
}
if(fb->wh==wh)
{
if(width==fb->width && height==fb->height && fb->hmdc && fb->hdib
&& fb->bits)
return 0;
else if(fbx_term(fb)==-1) return -1;
}
memset(fb, 0, sizeof(fbx_struct));
fb->wh=wh;
_w32(hdc=GetDC(fb->wh));
_w32(fb->hmdc=CreateCompatibleDC(hdc));
_w32(hmembmp=CreateCompatibleBitmap(hdc, width, height));
_w32(GetDeviceCaps(hdc, RASTERCAPS)&RC_BITBLT);
_w32(GetDeviceCaps(fb->hmdc, RASTERCAPS)&RC_DI_BITMAP);
bminfo.bmi.bmiHeader.biSize=sizeof(BITMAPINFOHEADER);
bminfo.bmi.bmiHeader.biBitCount=0;
_w32(GetDIBits(fb->hmdc, hmembmp, 0, 1, NULL, &bminfo.bmi, DIB_RGB_COLORS));
_w32(GetDIBits(fb->hmdc, hmembmp, 0, 1, NULL, &bminfo.bmi, DIB_RGB_COLORS));
_w32(DeleteObject(hmembmp)); hmembmp=0;
/* (we only needed it to get the screen properties) */
ps=bminfo.bmi.bmiHeader.biBitCount/8;
if(width>0) bminfo.bmi.bmiHeader.biWidth=width;
if(height>0) bminfo.bmi.bmiHeader.biHeight=height;
fb->width=bminfo.bmi.bmiHeader.biWidth;
fb->height=bminfo.bmi.bmiHeader.biHeight;
if(ps<3)
{
/* Make the buffer BGRA */
bminfo.bmi.bmiHeader.biCompression=BI_BITFIELDS;
bminfo.bmi.bmiHeader.biBitCount=32;
ps=4;
(*(DWORD *)&bminfo.bmi.bmiColors[0])=0xFF0000;
(*(DWORD *)&bminfo.bmi.bmiColors[1])=0xFF00;
(*(DWORD *)&bminfo.bmi.bmiColors[2])=0xFF;
}
fb->pitch=BMPPAD(fb->width*ps); /* Windoze bitmaps are always padded */
if(bminfo.bmi.bmiHeader.biCompression==BI_BITFIELDS)
{
rmask=(*(DWORD *)&bminfo.bmi.bmiColors[0]);
gmask=(*(DWORD *)&bminfo.bmi.bmiColors[1]);
bmask=(*(DWORD *)&bminfo.bmi.bmiColors[2]);
}
else
{
rmask=0xFF0000;
gmask=0xFF00;
bmask=0xFF;
}
fb->format=-1;
for(i=0; i<FBX_FORMATS; i++)
if(rmask==fbx_rmask[i] && gmask==fbx_gmask[i] && bmask==fbx_bmask[i]
&& ps==fbx_ps[i] && fbx_alphafirst[i]==0) fb->format=i;
if(fb->format==-1) _throw("Display has unsupported pixel format");
bminfo.bmi.bmiHeader.biHeight=-bminfo.bmi.bmiHeader.biHeight;
/* (our convention is top-down) */
_w32(fb->hdib=CreateDIBSection(hdc, &bminfo.bmi, DIB_RGB_COLORS,
(void **)&fb->bits, NULL, 0));
_w32(SelectObject(fb->hmdc, fb->hdib));
ReleaseDC(fb->wh, hdc);
return 0;
finally:
if(hmembmp) DeleteObject(hmembmp);
if(hdc) ReleaseDC(fb->wh, hdc);
#else
if(!wh.dpy || !wh.d) _throw("Invalid argument");
//.........这里部分代码省略.........
开发者ID:coffee8651,项目名称:turbovnc,代码行数:101,代码来源:fbx.c
示例15: takescreenshot
/*
Takes a screenshot of the screen and saves it in memory
*/
int takescreenshot(unsigned char **screenshotbuffer,int *screenshotbuffersize){
//declaring & initializing needed vars
HDC screendc = NULL;
HDC compatiblescreendc = NULL;
HBITMAP compatiblebitmap = NULL;
HGDIOBJ selectedobject = NULL;
BOOL bitbltresult = FALSE;
int getobjectresult = 0;
BITMAP finalbmp = {0};
BITMAPFILEHEADER bmfileheader = {0};
BITMAPINFOHEADER bminfoheader = {0};
DWORD dwBmpSize = 0;
HANDLE hDIB = NULL;
unsigned char *lpbitmap = NULL;
int getdibitsresult = 0;
DWORD dwSizeofDIB = 0;
int screenwidth = 0;
int screenheight = 0;
int leftxscreenpos = 0;
int leftyscreenpos = 0;
char currentpath[MAX_PATH] = {0};
//left side virtual screen coordinates
leftxscreenpos = GetSystemMetrics(SM_XVIRTUALSCREEN);
//top side virtual screen coordinates
leftyscreenpos = GetSystemMetrics(SM_YVIRTUALSCREEN);
//width in pixels of the virtual screen
screenwidth = GetSystemMetrics(SM_CXVIRTUALSCREEN);
//height in pixels of the virtual screen
screenheight = GetSystemMetrics(SM_CYVIRTUALSCREEN);
/*actually take the screenshot*/
screendc = GetDC(NULL);
if(screendc == NULL){
outputerror(DBG_ERROR,"%s\n","takescreenshot::GetDC() Failed");
return 1;
}
compatiblescreendc = CreateCompatibleDC(screendc);
if(compatiblescreendc == NULL){
outputerror(DBG_ERROR,"%s\n","takescreenshot::CreateCompatibleDC() Failed");
ReleaseDC(NULL,screendc);
return 1;
}
compatiblebitmap = CreateCompatibleBitmap(screendc,screenwidth,screenheight);
if(compatiblebitmap == NULL){
outputerror(DBG_ERROR,"%s\n","takescreenshot::CreateCompatibleBitmap() Failed");
ReleaseDC(NULL,screendc);
DeleteDC(compatiblescreendc);
return 1;
}
selectedobject = SelectObject(compatiblescreendc,compatiblebitmap);
if(selectedobject == NULL || selectedobject == HGDI_ERROR){
outputerror(DBG_ERROR,"%s\n","takescreenshot::SelectObject() Failed");
ReleaseDC(NULL,screendc);
DeleteDC(compatiblescreendc);
DeleteObject(compatiblebitmap);
return 1;
}
bitbltresult = BitBlt(compatiblescreendc,0,0,screenwidth,screenheight,screendc,leftxscreenpos,leftyscreenpos,SRCCOPY);
if(bitbltresult == 0){
outputerror(DBG_ERROR,"%s %d\n","takescreenshot::BitBlt() Failed", GetLastError());
ReleaseDC(NULL,screendc);
DeleteDC(compatiblescreendc);
DeleteObject(compatiblebitmap);
return 1;
}
/*save the screenshot to file*/
getobjectresult = GetObject(compatiblebitmap,sizeof(BITMAP),&finalbmp);
if(getobjectresult == 0){
outputerror(DBG_ERROR,"%s\n","takescreenshot::GetObject() Failed");
ReleaseDC(NULL,screendc);
DeleteDC(compatiblescreendc);
DeleteObject(compatiblebitmap);
return 1;
}
//bmp file format good read: http://en.wikipedia.org/wiki/BMP_file_format
bminfoheader.biSize = sizeof(BITMAPINFOHEADER);
bminfoheader.biWidth = screenwidth;
bminfoheader.biHeight = screenheight;
bminfoheader.biPlanes = 1;
bminfoheader.biBitCount = 32;
bminfoheader.biCompression = BI_RGB;
bminfoheader.biSizeImage = 0;
bminfoheader.biXPelsPerMeter = 0;
bminfoheader.biYPelsPerMeter = 0;
bminfoheader.biClrUsed = 0;
bminfoheader.biClrImportant = 0;
dwBmpSize = ((screenwidth * bminfoheader.biBitCount + 31) / 32) * 4 * screenheight;
hDIB = GlobalAlloc(GHND,dwBmpSize);
lpbitmap = (unsigned char *)GlobalLock(hDIB);
//get the actual bitmap 'bits'
getdibitsresult = GetDIBits(compatiblescreendc, compatiblebitmap, 0,(UINT)finalbmp.bmHeight, lpbitmap, (BITMAPINFO *)&bminfoheader, DIB_RGB_COLORS);
if(getdibitsresult == 0){
outputerror(DBG_ERROR,"%s\n","takescreenshot::GetDIBits() Failed");
ReleaseDC(NULL,screendc);
//.........这里部分代码省略.........
开发者ID:DiabloHorn,项目名称:cryptoshot,代码行数:101,代码来源:screenshot.c
示例16: sizeof
static fz_image *render_to_pixmap(fz_context *ctx, HBITMAP hbmp, SizeI size)
{
int w = size.dx, h = size.dy;
int stride = ((w * 3 + 3) / 4) * 4;
unsigned char *data = (unsigned char *)fz_malloc(ctx, stride * h);
BITMAPINFO bmi = { 0 };
bmi.bmiHeader.biSize = sizeof(bmi.bmiHeader);
bmi.bmiHeader.biWidth = w;
bmi.bmiHeader.biHeight = -h;
bmi.bmiHeader.biPlanes = 1;
bmi.bmiHeader.biBitCount = 24;
bmi.bmiHeader.biCompression = BI_RGB;
HDC hDC = GetDC(nullptr);
int res = GetDIBits(hDC, hbmp, 0, h, data, &bmi, DIB_RGB_COLORS);
ReleaseDC(nullptr, hDC);
if (!res) {
fz_free(ctx, data);
fz_throw(ctx, FZ_ERROR_GENERIC, "GetDIBits failed");
}
// convert BGR with padding to RGB without padding
unsigned char *out = data;
bool is_grayscale = true;
for (int y = 0; y < h; y++) {
const unsigned char *in = data + y * stride;
unsigned char green, blue;
for (int x = 0; x < w; x++) {
is_grayscale = i
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