本文整理汇总了C++中GlobalAlloc函数的典型用法代码示例。如果您正苦于以下问题：C++ GlobalAlloc函数的具体用法？C++ GlobalAlloc怎么用？C++ GlobalAlloc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GlobalAlloc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: CreateBMPFile
void CreateBMPFile(HWND hwnd, 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)
errhandler("GlobalAlloc", hwnd);
// 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))
{
errhandler("GetDIBits", hwnd);
}
// 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)
errhandler("CreateFile", hwnd);
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))
{
errhandler("WriteFile", hwnd);
}
// Copy the BITMAPINFOHEADER and RGBQUAD array into the file.
if (!WriteFile(hf, (LPVOID)pbih, sizeof(BITMAPINFOHEADER)
+ pbih->biClrUsed * sizeof(RGBQUAD),
(LPDWORD)&dwTmp, (NULL)))
errhandler("WriteFile", hwnd);
// 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))
errhandler("WriteFile", hwnd);
// Close the .BMP file.
if (!CloseHandle(hf))
errhandler("CloseHandle", hwnd);
// Free memory.
GlobalFree((HGLOBAL)lpBits);
}
开发者ID:jakwuh，项目名称:bsu，代码行数:74，代码来源:bitmap.cpp
示例2: watchGlobalAlloc
HGLOBAL watchGlobalAlloc(UINT Flags, UINT size)
{
HGLOBAL block = GlobalAlloc(Flags, size);
blocks[blocksnum++] = block;
return block;
}
开发者ID:kichik，项目名称:nsis-1，代码行数:6，代码来源:plugin.c
示例3: UpdateData
BOOL CCalcFrameDlg::OnCommand(WPARAM wParam, LPARAM lParam)
{
UpdateData(TRUE);
switch ( LOWORD(wParam) )
{
case ID_32771: //标准型
{
CMenu *pMenu = GetMenu()->GetSubMenu(0);
if( pMenu != NULL )
{
pMenu->CheckMenuItem(ID_32771,MF_CHECKED);
pMenu->CheckMenuItem(ID_32772,MF_UNCHECKED);
}
OnBnClickedBtC();
if( m_enWindowStyle == en_Normal ) return TRUE;
m_enWindowStyle = en_Normal;
PostMessage(WM_SIZE);
}
break;
case ID_32772: //科学型
{
CMenu *pMenu = GetMenu()->GetSubMenu(0);
if( pMenu != NULL )
{
pMenu->CheckMenuItem(ID_32772,MF_CHECKED);
pMenu->CheckMenuItem(ID_32771,MF_UNCHECKED);
}
OnBnClickedBtC();
if( m_enWindowStyle == en_Science ) return TRUE;
m_enWindowStyle = en_Science;
PostMessage(WM_SIZE);
}
break;
case ID_32773: //最前显示
{
m_bFront = !m_bFront;
GetMenu()->GetSubMenu(0)->CheckMenuItem(ID_32773,m_bFront?MF_CHECKED:MF_UNCHECKED);
SetWindowPos(m_bFront? &wndTopMost : &wndNoTopMost,0,0,0,0,SWP_NOSIZE | SWP_NOMOVE);
}
break;
case ID_32775:
{
//打开剪切板
if (OpenClipboard()==FALSE) return TRUE;
if (EmptyClipboard()==FALSE) { CloseClipboard(); return TRUE; }
//复制数据
HANDLE hData=GlobalAlloc(GMEM_MOVEABLE|GMEM_ZEROINIT,m_strOutPut.GetLength()+1);
if (hData==NULL)
{
CloseClipboard();
return TRUE;
}
LPTSTR szMemName=(LPTSTR)GlobalLock(hData);
lstrcpy(szMemName,m_strOutPut);
SetClipboardData(CF_TEXT,hData);
GlobalUnlock(hData);
CloseClipboard();
break;
}
case ID_32776:
{
//判断剪贴板的数据格式是否可以处理。
if (!IsClipboardFormatAvailable(CF_TEXT)) return TRUE;
//打开剪贴板。
if (!OpenClipboard()) return TRUE;
//获取UNICODE的数据。
HGLOBAL hMem = GetClipboardData(CF_TEXT);
if (hMem != NULL)
{
LPTSTR lpStr = (LPTSTR)GlobalLock(hMem);
if (lpStr != NULL)
{
for (int i=0;i<strlen(lpStr);i++)
{
BYTE bTemp = lpStr[i]-'0';
if(bTemp<0 || bTemp>9)
{
AfxMessageBox(TEXT("黏贴的字符不符合标准！"),MB_ICONSTOP);
return TRUE;
}
}
m_strOutPut = lpStr;
//释放锁内存。
GlobalUnlock(hMem);
}
}
//关闭剪贴板。
CloseClipboard();
//.........这里部分代码省略.........
开发者ID:HuugY，项目名称:MFC_Project，代码行数:101，代码来源:CalcFrameDlg.cpp
示例4: HeapCreate
void *globalrealloc(void *oldp,size_t newsize)
{
#if 0
void *p;
// Initialize heap
if (!hHeap)
{ hHeap = HeapCreate(0,0x10000,0);
if (!hHeap)
os_error();
}
newsize = (newsize + 3) & ~3L; // round up to dwords
if (newsize == 0)
{
if (oldp && HeapFree(hHeap,0,oldp) == FALSE)
os_error();
p = NULL;
}
else if (!oldp)
{
p = newsize ? HeapAlloc(hHeap,0,newsize) : NULL;
}
else
p = HeapReAlloc(hHeap,0,oldp,newsize);
#elif 1
MEMORY_BASIC_INFORMATION query;
void *p;
BOOL bSuccess;
if (!oldp)
p = VirtualAlloc (NULL, newsize, MEM_COMMIT | MEM_RESERVE, PAGE_READWRITE);
else
{
VirtualQuery (oldp, &query, sizeof(query));
if (!newsize)
{
p = NULL;
goto L1;
}
else
{ newsize = (newsize + 0xFFFF) & ~0xFFFFL;
if (query.RegionSize >= newsize)
p = oldp;
else
{ p = VirtualAlloc(NULL,newsize,MEM_COMMIT | MEM_RESERVE,PAGE_READWRITE);
if (p)
memcpy(p,oldp,query.RegionSize);
L1:
bSuccess = VirtualFree(oldp,query.RegionSize,MEM_DECOMMIT);
if (bSuccess)
bSuccess = VirtualFree(oldp,0,MEM_RELEASE);
if (!bSuccess)
os_error();
}
}
}
#else
void *p;
if (!oldp)
p = (void *)GlobalAlloc (0, newsize);
else if (!newsize)
{ GlobalFree(oldp);
p = NULL;
}
else
p = (void *)GlobalReAlloc(oldp,newsize,0);
#endif
dbg_printf("globalrealloc(oldp = %p, size = x%x) = %p\n",oldp,newsize,p);
return p;
}
开发者ID:Abscissa，项目名称:dmd，代码行数:73，代码来源:os.c
示例5: marshal_WdtpInterfacePointer
static void marshal_WdtpInterfacePointer(DWORD umcb_ctx, DWORD ctx)
{
USER_MARSHAL_CB umcb;
MIDL_STUB_MESSAGE stub_msg;
RPC_MESSAGE rpc_msg;
unsigned char *buffer, *buffer_end;
ULONG size;
IUnknown *unk;
IUnknown *unk2;
unsigned char *wireip;
HGLOBAL h = GlobalAlloc(GMEM_MOVEABLE, 0);
IStream *stm;
void *marshal_data;
LARGE_INTEGER zero;
ULARGE_INTEGER pos;
DWORD marshal_size;
/* shows that the WdtpInterfacePointer functions don't marshal anything for
* NULL pointers, so code using these functions must handle that case
* itself */
unk = NULL;
init_user_marshal_cb(&umcb, &stub_msg, &rpc_msg, NULL, 0, umcb_ctx);
size = WdtpInterfacePointer_UserSize(&umcb.Flags, ctx, 0, unk, &IID_IUnknown);
ok(size == 0, "size should be 0 bytes, not %d\n", size);
buffer = HeapAlloc(GetProcessHeap(), 0, size);
buffer_end = WdtpInterfacePointer_UserMarshal(&umcb.Flags, ctx, buffer, unk, &IID_IUnknown);
wireip = buffer;
HeapFree(GetProcessHeap(), 0, buffer);
/* Now for a non-NULL pointer. The marshalled data are two size DWORDS and then
the result of CoMarshalInterface called with the LOWORD of the ctx */
unk = &Test_Unknown;
CreateStreamOnHGlobal(h, TRUE, &stm);
CoMarshalInterface(stm, &IID_IUnknown, unk, LOWORD(ctx), NULL, MSHLFLAGS_NORMAL);
zero.QuadPart = 0;
IStream_Seek(stm, zero, STREAM_SEEK_CUR, &pos);
marshal_size = pos.u.LowPart;
marshal_data = GlobalLock(h);
trace("marshal_size %x\n", marshal_size);
init_user_marshal_cb(&umcb, &stub_msg, &rpc_msg, NULL, 0, umcb_ctx);
size = WdtpInterfacePointer_UserSize(&umcb.Flags, ctx, 0, unk, &IID_IUnknown);
ok(size >= marshal_size + 2 * sizeof(DWORD), "marshal size %x got %x\n", marshal_size, size);
trace("WdtpInterfacePointer_UserSize returned %x\n", size);
buffer = HeapAlloc(GetProcessHeap(), 0, size);
init_user_marshal_cb(&umcb, &stub_msg, &rpc_msg, buffer, size, umcb_ctx);
buffer_end = WdtpInterfacePointer_UserMarshal(&umcb.Flags, ctx, buffer, unk, &IID_IUnknown);
wireip = buffer;
ok(buffer_end == buffer + marshal_size + 2 * sizeof(DWORD), "buffer_end %p buffer %p\n", buffer_end, buffer);
ok(*(DWORD *)wireip == marshal_size, "wireip + 0x0 should be %x instead of %x\n", marshal_size, *(DWORD *)wireip);
wireip += sizeof(DWORD);
ok(*(DWORD *)wireip == marshal_size, "wireip + 0x4 should be %x instead of %x\n", marshal_size, *(DWORD *)wireip);
wireip += sizeof(DWORD);
ok(!memcmp(marshal_data, wireip, marshal_size), "buffer mismatch\n");
GlobalUnlock(h);
zero.QuadPart = 0;
IStream_Seek(stm, zero, STREAM_SEEK_SET, NULL);
CoReleaseMarshalData(stm);
IStream_Release(stm);
unk2 = NULL;
init_user_marshal_cb(&umcb, &stub_msg, &rpc_msg, buffer, size, umcb_ctx);
WdtpInterfacePointer_UserUnmarshal(&umcb.Flags, buffer, &unk2, &IID_IUnknown);
ok(unk2 != NULL, "IUnknown object didn't unmarshal properly\n");
HeapFree(GetProcessHeap(), 0, buffer);
init_user_marshal_cb(&umcb, &stub_msg, &rpc_msg, NULL, 0, MSHCTX_INPROC);
WdtpInterfacePointer_UserFree(unk2);
}
开发者ID:pstrealer，项目名称:wine，代码行数:74，代码来源:usrmarshal.c
示例6: CommandLineToArgvA
PCHAR* CommandLineToArgvA(PCHAR CmdLine, int* _argc)
{
PCHAR* argv;
PCHAR _argv;
ULONG len;
ULONG argc;
CHAR a;
ULONG i, j;
BOOLEAN in_QM;
BOOLEAN in_TEXT;
BOOLEAN in_SPACE;
len = strlen(CmdLine);
i = ((len + 2) / 2)*sizeof(PVOID)+sizeof(PVOID);
argv = (PCHAR*)GlobalAlloc(GMEM_FIXED,
i + (len + 2)*sizeof(CHAR));
if (!argv)
return 0;
_argv = (PCHAR)(((PUCHAR)argv) + i);
argc = 0;
argv[argc] = _argv;
in_QM = FALSE;
in_TEXT = FALSE;
in_SPACE = TRUE;
i = 0;
j = 0;
while (a = CmdLine[i]) {
if (in_QM) {
if (a == '\"') {
in_QM = FALSE;
}
else {
_argv[j] = a;
j++;
}
}
else {
switch (a) {
case '\"':
in_QM = TRUE;
in_TEXT = TRUE;
if (in_SPACE) {
argv[argc] = _argv + j;
argc++;
}
in_SPACE = FALSE;
break;
case ' ':
case '\t':
case '\n':
case '\r':
if (in_TEXT) {
_argv[j] = '\0';
j++;
}
in_TEXT = FALSE;
in_SPACE = TRUE;
break;
default:
in_TEXT = TRUE;
if (in_SPACE) {
argv[argc] = _argv + j;
argc++;
}
_argv[j] = a;
j++;
in_SPACE = FALSE;
break;
}
}
i++;
}
_argv[j] = '\0';
argv[argc] = NULL;
(*_argc) = argc;
return argv;
}
开发者ID:Shad0wShayd3，项目名称:ElDorito，代码行数:84，代码来源:CommandMap.cpp
示例7: TT_GetUser
void COnlineUsersDlg::MenuCommand(UINT uCmd)
{
int nUserID = 0;
int count = m_wndUsers.GetItemCount();
for(int i=0;i<count;i++)
{
if(m_wndUsers.GetItemState(i, LVIS_SELECTED) == LVIS_SELECTED)
nUserID = m_wndUsers.GetItemData(i);
}
User user = {0};
TT_GetUser(ttInst, nUserID, &user);
Channel chan = {0};
TT_GetChannel(ttInst, user.nChannelID, &chan);
switch(uCmd)
{
case ID_POPUP_KICKANDBAN :
TT_DoBanUser(ttInst, nUserID, 0);
TT_DoKickUser(ttInst, nUserID, 0);
break;
case ID_POPUP_KICK :
TT_DoKickUser(ttInst, nUserID, user.nChannelID);
break;
case ID_POPUP_OP :
TT_DoChannelOpEx(ttInst, nUserID, user.nChannelID, chan.szOpPassword,
!TT_IsChannelOperator(ttInst, nUserID, user.nChannelID));
break;
case ID_POPUP_COPYUSERINFORMATION :
{
User user;
if(TT_GetUser(ttInst, nUserID, &user))
{
CString szText;
CString szUserID;
szUserID.Format(_T("%d"), user.nUserID);
TTCHAR szChannel[TT_STRLEN] = _T("");
TT_GetChannelPath(ttInst, user.nChannelID, szChannel);
szText = szUserID;
szText += _T("\t");
szText += user.szNickname;
szText += _T("\t");
szText += user.szStatusMsg;
szText += _T("\t");
szText += user.szUsername;
szText += _T("\t");
szText += szChannel;
szText += _T("\t");
szText += user.szIPAddress;
szText += _T("\t");
szText += GetVersion(user);
OpenClipboard();
EmptyClipboard();
HGLOBAL hglbCopy;
hglbCopy = GlobalAlloc(GMEM_MOVEABLE,
(szText.GetLength() + 1) * sizeof(TCHAR));
if(hglbCopy)
{
LPVOID szStr = GlobalLock(hglbCopy);
memcpy(szStr, szText.GetBuffer(), (szText.GetLength() + 1) * sizeof(TCHAR));
GlobalUnlock(hglbCopy);
#if defined(UNICODE) || defined(_UNICODE)
SetClipboardData(CF_UNICODETEXT, hglbCopy);
#else
SetClipboardData(CF_TEXT, hglbCopy);
#endif
}
CloseClipboard();
}
}
}
}
开发者ID:CowPanda，项目名称:TeamTalk5，代码行数:73，代码来源:OnlineUsersDlg.cpp
示例8: RegisterClipboardFormat
void ClipboardData::ToClipboard()
{
// do we have a name to restore??
UINT format = uFormat;
if ( dataName != NULL)
{
UINT u = RegisterClipboardFormat( dataName);
if (u > 0)
{
// the format has changed it seems.
format = u;
}
}
switch (format)
{
case CF_HDROP:
{
ClipboardDropData* cdd = static_cast<ClipboardDropData*>(data);
// get the size of the clipboard.
size_t size = cdd->GetDropfilesSize();
if (size > 0)
{
// make some room for this DROPFILES item.
HGLOBAL hGlobal = GlobalAlloc(GMEM_ZEROINIT | GMEM_MOVEABLE | GMEM_DDESHARE, size);
// lock it so we can now use it.
DROPFILES *df = (DROPFILES*)GlobalLock(hGlobal);
// populate the data if we can.
if (cdd->PopulateDropFiles(df, size))
{
// release the lock
GlobalUnlock(hGlobal);
// set the data in the clipboard.
SetClipboardData(CF_HDROP, hGlobal);
}
else
{
// release the lock
GlobalUnlock(hGlobal);
// free the memory
GlobalFree(hGlobal);
}
}
}
break;
case CF_ENHMETAFILE:
SetClipboardData(CF_ENHMETAFILE, CopyEnhMetaFile((HENHMETAFILE)data, NULL));
break;
case CF_BITMAP:
SetClipboardData(CF_BITMAP, CopyBitmap( (HBITMAP)data ));
break;
default:
if (dataSize > 0)
{
// get some data
HGLOBAL hGlobal = GlobalAlloc(GMEM_ZEROINIT | GMEM_MOVEABLE | GMEM_DDESHARE, dataSize);
void* pMem = GlobalLock(hGlobal);
memcpy(pMem, data, dataSize);
GlobalUnlock(hGlobal);
// we can no save the data.
SetClipboardData(format, hGlobal);
}
else
{
// there is no data to set...
SetClipboardData(format, 0);
}
break;
}
}
开发者ID:FFMG，项目名称:myoddweb.piger，代码行数:79，代码来源:ClipboardData.cpp
示例9: _TIFFmalloc
tdata_t
_TIFFmalloc(tsize_t s)
{
return ((tdata_t)GlobalAlloc(GMEM_FIXED, s));
}
开发者ID:CyberIntelMafia，项目名称:clamav-devel，代码行数:5，代码来源:tif_win32.c
示例10: DoGetRepStuff
void DoGetRepStuff(HWND hwnd, LPINSERTITEM pfr)
{
HD_ITEM hi;
int ret;
HD_ITEM FAR* pitem;
HGLOBAL hglb;
int iAlloc;
hi.mask = pfr->mask;
hi.cxy = pfr->cxy;
if (pfr->Nullpitem)
pitem = NULL;
else
pitem = &hi;
hi.cchTextMax = pfr->cchTextMax;
// hi.cchTextMax = MAX_PSZTEXT;
hi.fmt = pfr->fmt;
hi.lParam = pfr->lParam;
if (hi.cchTextMax == 0)
iAlloc = MAX_PSZTEXT;
else
iAlloc = hi.cchTextMax;
if (pfr->NullpszText)
hi.pszText = NULL; // can this be done ??
else {
hglb = GlobalAlloc(GPTR, iAlloc);
hi.pszText = (LPSTR) GlobalLock(hglb);
// _fstrcpy(hi.pszText, pfr->pszText);
}
if (pfr->NullHwd)
ret = Header_GetItem(NULL, pfr->index, pitem);
else
ret = Header_GetItem(pfr->hwnd, pfr->index, pitem);
wsprintf(szDbgMsg, "%d = Header_GetItem(index = %d, \n\
mask = %x )", ret, pfr->index, hi.mask);
MyDebugMsg(DM_TRACE, "%s", (LPCSTR) szDbgMsg);
SetDlgItemInt(hwnd, IDC_INSERTRET, ret, TRUE) ;
if (ret) {
SetDlgItemInt(hwnd, IDC_INSERTCXY, hi.cxy, TRUE);
SetDlgItemInt(hwnd, IDC_INSERTCCHTEXTMAX, hi.cchTextMax, TRUE);
wsprintf(szTemp, szLongFilter, hi.lParam);
SetDlgItemText(hwnd, IDC_INSERTLPARAM, szTemp);
SetDlgItemText(hwnd, IDC_INSERTTEXT, hi.pszText);
wsprintf(szTemp, "%04hx", hi.mask);
SetDlgItemText(hwnd, IDC_INSERTMASK, szTemp);
CheckDlgButton(hwnd, IDC_INSERTHDRIGHT, hi.fmt & HDF_RIGHT);
CheckDlgButton(hwnd, IDC_INSERTHDLEFT, hi.fmt & HDF_LEFT);
CheckDlgButton(hwnd, IDC_INSERTHDCENTER, hi.fmt & HDF_CENTER);
CheckDlgButton(hwnd, IDC_INSERTHDJUSTIFYMASK, hi.fmt & HDF_JUSTIFYMASK);
CheckDlgButton(hwnd, IDC_INSERTHDOWNERDRAW, hi.fmt & HDF_OWNERDRAW);
CheckDlgButton(hwnd, IDC_INSERTHDSTRING, hi.fmt & HDF_STRING);
CheckDlgButton(hwnd, IDC_INSERTHDBITMAP, hi.fmt & HDF_BITMAP);
wsprintf(szTemp, szLongFilter, (DWORD) hi.hbm);
SetDlgItemText(hwnd, IDC_INSERTHBM, szTemp);
wsprintf(szTemp, "%04x", hi.fmt);
// SetDlgItemInt(hwnd, IDC_INSERTFMT, hi.fmt, TRUE);
SetDlgItemText(hwnd, IDC_INSERTFMT, szTemp);
}
if (!pfr->NullpszText) {
GlobalUnlock(hglb);
GlobalFree(hglb);
}
/****
wsprintf(szTemp, szLongFilter, hwndFind) ;
SetDlgItemText(hwnd, ID_INSERTRET, szTemp) ;
**/
}
开发者ID:mingpen，项目名称:OpenNT，代码行数:76，代码来源:headget.c
示例11: RegisterClipboardFormat
void BookServerTest::testWord()
{
//static const WCHAR kFilePath[] = LR"(F:\bk\physics\quantum mechanics\exam\2009\09北京大学量子力学（记忆版）.doc)";
DWORD rtfFormat = RegisterClipboardFormat(L"Rich Text Format");
static const WCHAR kFilePath[] = LR"(e:\test.docx)";
ComPtr<IMoniker> fileMoniker;
auto hr = CreateFileMoniker(kFilePath, &fileMoniker);
if (FAILED(hr))
return;
ComPtr<IBindCtx> pbc;
CreateBindCtx(0, &pbc);
ComPtr<IDataObject> dataObject;
hr = fileMoniker->BindToObject(pbc, NULL, IID_IDataObject, (void**)&dataObject);
if (FAILED(hr))
return;
ComPtr<IDataObject> dataObject2;
hr = fileMoniker->BindToObject(pbc, NULL, IID_IDataObject, (void**)&dataObject2);
if (FAILED(hr))
return;
{
ComPtr<IEnumFORMATETC> enumFormat;
auto hr = dataObject->EnumFormatEtc(DATADIR_GET, &enumFormat);
if (FAILED(hr))
return;
FORMATETC format;
std::vector<FORMATETC> getFormats;
while ((hr = enumFormat->Next(1, &format, NULL)) == S_OK) {
getFormats.push_back(format);
}
assert(getFormats.size() > 1);
}
{
ComPtr<IEnumFORMATETC> enumFormat;
auto hr = dataObject->EnumFormatEtc(DATADIR_SET, &enumFormat);
if (FAILED(hr))
return;
FORMATETC format;
std::vector<FORMATETC> setFormats;
while ((hr = enumFormat->Next(1, &format, NULL)) == S_OK) {
setFormats.push_back(format);
}
assert(setFormats.size() > 1);
}
{
FORMATETC etc = { 0 };
etc.cfFormat = CF_UNICODETEXT;
etc.dwAspect = DVASPECT_CONTENT;
etc.lindex = -1;
etc.tymed = TYMED_HGLOBAL;
STGMEDIUM stg = { 0 };
hr = dataObject->GetData(&etc, &stg);
if (FAILED(hr))
return;
auto ptr = GlobalLock(stg.hGlobal);
assert(ptr);
}
{
FORMATETC etc = { 0 };
etc.cfFormat = CF_TEXT;
etc.dwAspect = DVASPECT_CONTENT;
etc.lindex = -1;
etc.tymed = TYMED_HGLOBAL;
STGMEDIUM stg = { 0 };
hr = dataObject->GetData(&etc, &stg);
if (FAILED(hr))
return;
//return gbk encoding.
auto ptr = GlobalLock(stg.hGlobal);
assert(ptr);
}
{
FORMATETC etc = { 0 };
etc.cfFormat = CF_TEXT;
etc.dwAspect = DVASPECT_CONTENT;
etc.lindex = -1;
etc.tymed = TYMED_HGLOBAL;
STGMEDIUM stg = { 0 };
const static CHAR kContent[] = "how to zhangbi\r\n";
auto hg = GlobalAlloc(GPTR, sizeof(kContent) + 1);
auto ptr = (CHAR*)GlobalLock(hg);
StringCchCopyA(ptr, sizeof(kContent), kContent);
stg.tymed = TYMED_HGLOBAL;
stg.hGlobal = hg;
hr = dataObject->SetData(&etc, &stg, FALSE);
if (FAILED(hr))
return;
assert(stg.lpszFileName);
ReleaseStgMedium(&stg);
ComQIPtr<IPersistFile> file = dataObject;
hr = file->Save(NULL, TRUE);
if (FAILED(hr))
return;
}
开发者ID:Jichao，项目名称:comtut，代码行数:100，代码来源:BookServerTest.cpp
示例12: wxLogTrace
// get data functions
STDMETHODIMP wxIDataObject::GetData(FORMATETC *pformatetcIn, STGMEDIUM *pmedium)
{
wxLogTrace(wxTRACE_OleCalls, wxT("wxIDataObject::GetData"));
// is data is in our format?
HRESULT hr = QueryGetData(pformatetcIn);
if ( FAILED(hr) )
return hr;
// for the bitmaps and metafiles we use the handles instead of global memory
// to pass the data
wxDataFormat format = (wxDataFormat::NativeFormat)pformatetcIn->cfFormat;
format = HtmlFormatFixup(format);
// is this system data?
if ( GetSystemData(format, pmedium) )
{
// pmedium is already filled with corresponding data, so we're ready.
return S_OK;
}
switch ( format )
{
case wxDF_BITMAP:
pmedium->tymed = TYMED_GDI;
break;
case wxDF_ENHMETAFILE:
pmedium->tymed = TYMED_ENHMF;
break;
#ifndef __WXWINCE__
case wxDF_METAFILE:
pmedium->hGlobal = GlobalAlloc(GMEM_MOVEABLE | GMEM_SHARE,
sizeof(METAFILEPICT));
if ( !pmedium->hGlobal ) {
wxLogLastError(wxT("GlobalAlloc"));
return E_OUTOFMEMORY;
}
pmedium->tymed = TYMED_MFPICT;
break;
#endif
default:
// alloc memory
size_t size = m_pDataObject->GetDataSize(format);
if ( !size ) {
// it probably means that the method is just not implemented
wxLogDebug(wxT("Invalid data size - can't be 0"));
return DV_E_FORMATETC;
}
// we may need extra space for the buffer size
size += m_pDataObject->GetBufferOffset( format );
HGLOBAL hGlobal = GlobalAlloc(GMEM_MOVEABLE | GMEM_SHARE, size);
if ( hGlobal == NULL ) {
wxLogLastError(wxT("GlobalAlloc"));
return E_OUTOFMEMORY;
}
// copy data
pmedium->tymed = TYMED_HGLOBAL;
pmedium->hGlobal = hGlobal;
}
pmedium->pUnkForRelease = NULL;
// do copy the data
hr = GetDataHere(pformatetcIn, pmedium);
if ( FAILED(hr) ) {
// free resources we allocated
if ( pmedium->tymed & (TYMED_HGLOBAL | TYMED_MFPICT) ) {
GlobalFree(pmedium->hGlobal);
}
return hr;
}
return S_OK;
}
开发者ID:AdmiralCurtiss，项目名称:pcsx2，代码行数:82，代码来源:dataobj.cpp
示例13: ReadFileIntoMemory
LPLOCKBYTES ReadFileIntoMemory(const std::wstring& fileName)
{
HRESULT hr = S_OK;
HANDLE file = INVALID_HANDLE_VALUE;
file = ::CreateFileW(fileName.c_str(), GENERIC_READ, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, 0, NULL);
if(INVALID_HANDLE_VALUE == file)
{
DWORD lastError = GetLastError();
std::tostringstream msg;
msg << _T("Failed to open [") << fileName << _T("] for reading its contents into memory, so we may read its custom properties") << std::ends;
throw Workshare::System::SystemException(msg.str().c_str(), lastError);
}
try
{
unsigned long size = ::GetFileSize(file, NULL);
HGLOBAL memory = GlobalAlloc(GPTR, size);
if(NULL == memory)
{
DWORD lastError = GetLastError();
std::tostringstream msg;
msg << _T("Failed to allocate ") << size << _T(" bytes of memory for reading [") << fileName << _T("] into memory, so we may read its custom properties") << std::ends;
throw Workshare::System::SystemException(msg.str().c_str(), lastError);
}
try
{
DWORD numberOfBytesRead = 0;
BOOL ok = ::ReadFile(file, memory, size, &numberOfBytesRead, NULL);
if(!ok)
{
DWORD lastError = GetLastError();
std::tostringstream msg;
msg << _T("Failed to read ") << size << _T(" bytes from [") << fileName << _T("] into a buffer that is ") << size << _T(" big, so we may read its custom properties") << std::ends;
throw Workshare::System::SystemException(msg.str().c_str(), lastError);
}
if(size != numberOfBytesRead)
{
std::tostringstream msg;
msg << _T("Failed to read all the ") << size << _T(" bytes from [") << fileName << _T("] into a buffer that is ") << size << _T(" big, so we may read its custom properties. Only ") << numberOfBytesRead << _T(" was read") << std::ends;
throw Workshare::System::IO::IOException(msg.str().c_str());
}
LPLOCKBYTES lpBytes = NULL;
hr = CreateILockBytesOnHGlobal(memory, TRUE, &lpBytes);
if(FAILED(hr))
{
std::tostringstream msg;
msg << _T("Failed to create an instance of ILockBytes from memory ") << size << _T(" bytes from [") << fileName << _T("] into a buffer that is ") << size << _T(" big, so we may read its custom properties. Only ") << numberOfBytesRead << _T(" was read") << std::ends;
throw Workshare::System::IO::IOException(msg.str().c_str());
}
CloseHandle(file);
return lpBytes;
}
catch(...)
{
GlobalFree(memory);
throw;
}
}
catch(...)
{
CloseHandle(file);
throw;
}
}
开发者ID:killbug2004，项目名称:WSProf，代码行数:69，代码来源:DominoConnector.cpp
示例14: test_marshal_HGLOBAL
static void test_marshal_HGLOBAL(void)
{
USER_MARSHAL_CB umcb;
MIDL_STUB_MESSAGE stub_msg;
RPC_MESSAGE rpc_msg;
unsigned char *buffer;
ULONG size, block_size;
HGLOBAL hglobal;
HGLOBAL hglobal2;
unsigned char *wirehglobal;
int i;
hglobal = NULL;
init_user_marshal_cb(&umcb, &stub_msg, &rpc_msg, NULL, 0, MSHCTX_LOCAL);
size = HGLOBAL_UserSize(&umcb.Flags, 0, &hglobal);
/* native is poorly programmed and allocates 4/8 bytes more than it needs to
* here - Wine doesn't have to emulate that */
ok((size == 8) || broken(size == 12) || broken(size == 16), "Size should be 8, instead of %d\n", size);
buffer = HeapAlloc(GetProcessHeap(), 0, size);
init_user_marshal_cb(&umcb, &stub_msg, &rpc_msg, buffer, size, MSHCTX_LOCAL);
HGLOBAL_UserMarshal(&umcb.Flags, buffer, &hglobal);
wirehglobal = buffer;
ok(*(ULONG *)wirehglobal == WDT_REMOTE_CALL, "Context should be WDT_REMOTE_CALL instead of 0x%08x\n", *(ULONG *)wirehglobal);
wirehglobal += sizeof(ULONG);
ok(*(ULONG *)wirehglobal == 0, "buffer+4 should be HGLOBAL\n");
init_user_marshal_cb(&umcb, &stub_msg, &rpc_msg, buffer, size, MSHCTX_LOCAL);
HGLOBAL_UserUnmarshal(&umcb.Flags, buffer, &hglobal2);
ok(hglobal2 == hglobal, "Didn't unmarshal properly\n");
HeapFree(GetProcessHeap(), 0, buffer);
init_user_marshal_cb(&umcb, &stub_msg, &rpc_msg, NULL, 0, MSHCTX_LOCAL);
HGLOBAL_UserFree(&umcb.Flags, &hglobal2);
for(block_size = 0; block_size <= 17; block_size++)
{
ULONG actual_size, expected_size;
hglobal = GlobalAlloc(0, block_size);
buffer = GlobalLock(hglobal);
for (i = 0; i < block_size; i++)
buffer[i] = i;
GlobalUnlock(hglobal);
actual_size = GlobalSize(hglobal);
expected_size = actual_size + 5 * sizeof(DWORD);
trace("%d: actual size %d\n", block_size, actual_size);
init_user_marshal_cb(&umcb, &stub_msg, &rpc_msg, NULL, 0, MSHCTX_LOCAL);
size = HGLOBAL_UserSize(&umcb.Flags, 0, &hglobal);
/* native is poorly programmed and allocates 4/8 bytes more than it needs to
* here - Wine doesn't have to emulate that */
ok(size == expected_size ||
broken(size == expected_size + 4) ||
broken(size == expected_size + 8),
"%d: got size %d\n", block_size, size);
buffer = HeapAlloc(GetProcessHeap(), 0, size);
init_user_marshal_cb(&umcb, &stub_msg, &rpc_msg, buffer, size, MSHCTX_LOCAL);
HGLOBAL_UserMarshal(&umcb.Flags, buffer, &hglobal);
wirehglobal = buffer;
ok(*(ULONG *)wirehglobal == WDT_REMOTE_CALL, "Context should be WDT_REMOTE_CALL instead of 0x%08x\n", *(ULONG *)wirehglobal);
wirehglobal += sizeof(ULONG);
ok(*(ULONG *)wirehglobal == (ULONG)(ULONG_PTR)hglobal, "buffer+0x4 should be HGLOBAL\n");
wirehglobal += sizeof(ULONG);
ok(*(ULONG *)wirehglobal == actual_size, "%d: buffer+0x8 %08x\n", block_size, *(ULONG *)wirehglobal);
wirehglobal += sizeof(ULONG);
ok(*(ULONG *)wirehglobal == (ULONG)(ULONG_PTR)hglobal, "buffer+0xc should be HGLOBAL\n");
wirehglobal += sizeof(ULONG);
ok(*(ULONG *)wirehglobal == actual_size, "%d: buffer+0x10 %08x\n", block_size, *(ULONG *)wirehglobal);
wirehglobal += sizeof(ULONG);
for (i = 0; i < block_size; i++)
ok(wirehglobal[i] == i, "buffer+0x%x should be %d\n", 0x10 + i, i);
init_user_marshal_cb(&umcb, &stub_msg, &rpc_msg, buffer, size, MSHCTX_LOCAL);
HGLOBAL_UserUnmarshal(&umcb.Flags, buffer, &hglobal2);
ok(hglobal2 != NULL, "Didn't unmarshal properly\n");
HeapFree(GetProcessHeap(), 0, buffer);
init_user_marshal_cb(&umcb, &stub_msg, &rpc_msg, NULL, 0, MSHCTX_LOCAL);
HGLOBAL_UserFree(&umcb.Flags, &hglobal2);
GlobalFree(hglobal);
}
}
开发者ID:pstrealer，项目名称:wine，代码行数:79，代码来源:usrmarshal.c
示例15: SaveBmp
//VC下把HBITMAP保存为bmp图片
BOOL SaveBmp(HBITMAP hBitmap, CString FileName)
{
HDC hDC;
//当前分辨率下每象素所占字节数
int iBits;
//位图中每象素所占字节数
WORD wBitCount;
//定义调色板大小， 位图中像素字节大小 ，位图文件大小 ， 写入文件字节数
DWORD dwPaletteSize = 0, dwBmBitsSize = 0, dwDIBSize = 0, dwWritten = 0;
//位图属性结构
BITMAP Bitmap;
//位图文件头结构
BITMAPFILEHEADER bmfHdr;
//位图信息头结构
BITMAPINFOHEADER bi;
//指向位图信息头结构
LPBITMAPINFOHEADER lpbi;
//定义文件，分配内存句柄，调色板句柄
HANDLE fh, hDib, hPal, hOldPal = NULL;
//计算位图文件每个像素所占字节数
hDC = CreateDC(L"DISPLAY", NULL, NULL, NULL);
iBits = GetDeviceCaps(hDC, BITSPIXEL) * GetDeviceCaps(hDC, PLANES);
DeleteDC(hDC);
if (iBits <= 1)
wBitCount = 1;
else if (iBits <= 4)
wBitCount = 4;
else if (iBits <= 8)
wBitCount = 8;
else
wBitCount = 24;
GetObject(hBitmap, sizeof(Bitmap), (LPSTR)&Bitmap);
bi.biSize = sizeof(BITMAPINFOHEADER);
bi.biWidth = Bitmap.bmWidth;
bi.biHeight = Bitmap.bmHeight;
bi.biPlanes = 1;
bi.biBitCount = wBitCount;
bi.biCompression = BI_RGB;
bi.biSizeImage = 0;
bi.biXPelsPerMeter = 0;
bi.biYPelsPerMeter = 0;
bi.biClrImportant = 0;
bi.biClrUsed = 0;
dwBmBitsSize = ((Bitmap.bmWidth *wBitCount + 31) / 32) * 4 * Bitmap.bmHeight;
//为位图内容分配内存
hDib = GlobalAlloc(GHND, dwBmBitsSize + dwPaletteSize + sizeof(BITMAPINFOHEADER));
lpbi = (LPBITMAPINFOHEADER)GlobalLock(hDib);
*lpbi = bi;
// 处理调色板
hPal = GetStockObject(DEFAULT_PALETTE);
if (hPal)
{
hDC = ::GetDC(NULL);
hOldPal = ::SelectPalette(hDC, (HPALETTE)hPal, FALSE);
RealizePalette(hDC);
}
// 获取该调色板下新的像素值
GetDIBits(hDC, hBitmap, 0, (UINT)Bitmap.bmHeight,
(LPSTR)lpbi + sizeof(BITMAPINFOHEADER) + dwPaletteSize,
(BITMAPINFO *)lpbi, DIB_RGB_COLORS);
//恢复调色板
if (hOldPal)
{
::SelectPalette(hDC, (HPALETTE)hOldPal, TRUE);
RealizePalette(hDC);
::ReleaseDC(NULL, hDC);
}
//创建位图文件
fh = CreateFile(FileName, GENERIC_WRITE, 0, NULL, CREATE_ALWAYS,
FILE_ATTRIBUTE_NORMAL | FILE_FLAG_SEQUENTIAL_SCAN, NULL);
if (fh == INVALID_HANDLE_VALUE) return FALSE;
// 设置位图文件头
bmfHdr.bfType = 0x4D42; // "BM"
dwDIBSize = sizeof(BITMAPFILEHEADER) + sizeof(BITMAPINFOHEADER) + dwPaletteSize + dwBmBitsSize;
bmfHdr.bfSize = dwDIBSize;
bmfHdr.bfReserved1 = 0;
bmfHdr.bfReserved2 = 0;
bmfHdr.bfOffBits = (DWORD)sizeof(BITMAPFILEHEADER) + (DWORD)sizeof(BITMAPINFOHEADER) + dwPaletteSize;
// 写入位图文件头
WriteFile(fh, (LPSTR)&bmfHdr, sizeof(BITMAPFILEHEADER), &dwWritten, NULL);
// 写入位图文件其余内容
WriteFile(fh, (LPSTR)lpbi, dwDIBSize, &dwWritten, NULL);
//清除
GlobalUnlock(hDib);
GlobalFree(hDib);
CloseHandle(fh);
return TRUE;
//.........这里部分代码省略.........
开发者ID:gao19920804，项目名称:ScreenShot，代码行数:101，代码来源:ScreenShot.cpp
示例16: test_marshal_HMETAFILEPICT
static void test_marshal_HMETAFILEPICT(void)
{
USER_MARSHAL_CB umcb;
MIDL_STUB_MESSAGE stub_msg;
RPC_MESSAGE rpc_msg;
unsigned char *buffer, *buffer_end;
ULONG size;
HMETAFILEPICT hmfp;
HMETAFILEPICT hmfp2 = NULL;
METAFILEPICT *pmfp;
unsigned char *wirehmfp;
hmfp = GlobalAlloc(GMEM_MOVEABLE, sizeof(*pmfp));
pmfp = GlobalLock(hmfp);
pmfp->mm = MM_ISOTROPIC;
pmfp->xExt = 1;
pmfp->yExt = 2;
pmfp->hMF = create_mf();
GlobalUnlock(hmfp);
init_user_marshal_cb(&umcb, &stub_msg, &rpc_msg, NULL, 0, MSHCTX_DIFFERENTMACHINE);
size = HMETAFILEPICT_UserSize(&umcb.Flags, 0, &hmfp);
ok(size > 20, "size should be at least 20 bytes, not %d\n", size);
trace("size is %d\n", size);
buffer = HeapAlloc(GetProcessHeap(), 0, size);
init_user_marshal_cb(&umcb, &stub_msg, &rpc_msg, buffer, size, MSHCTX_DIFFERENTMACHINE);
buffer_end = HMETAFILEPICT_UserMarshal(&umcb.Flags, buffer, &hmfp);
wirehmfp = buffer;
ok(*(DWORD *)wirehmfp == WDT_REMOTE_CALL, "wirestgm + 0x0 should be WDT_REMOTE_CALL instead of 0x%08x\n", *(DWORD *)wirehmfp);
wirehmfp += sizeof(DWORD);
ok(*(DWORD *)wirehmfp == (DWORD)(DWORD_PTR)hmfp, "wirestgm + 0x4 should be hmf instead of 0x%08x\n", *(DWORD *)wirehmfp);
wirehmfp += sizeof(DWORD);
ok(*(DWORD *)wirehmfp == MM_ISOTROPIC, "wirestgm + 0x8 should be MM_ISOTROPIC instead of 0x%08x\n", *(DWORD *)wirehmfp);
wirehmfp += sizeof(DWORD);
ok(*(DWORD *)wirehmfp == 1, "wirestgm + 0xc should be 1 instead of 0x%08x\n", *(DWORD *)wirehmfp);
wirehmfp += sizeof(DWORD);
ok(*(DWORD *)wirehmfp == 2, "wirestgm + 0x10 should be 2 instead of 0x%08x\n", *(DWORD *)wirehmfp);
wirehmfp += sizeof(DWORD);
ok(*(DWORD *)wirehmfp == USER_MARSHAL_PTR_PREFIX, "wirestgm + 0x14 should be \"User\" instead of 0x%08x\n", *(DWORD *)wirehmfp);
wirehmfp += sizeof(DWORD);
ok(*(DWORD *)wirehmfp == WDT_REMOTE_CALL, "wirestgm + 0x18 should be WDT_REMOTE_CALL instead of 0x%08x\n", *(DWORD *)wirehmfp);
wirehmfp += sizeof(DWORD);
pmfp = GlobalLock(hmfp);
ok(*(DWORD *)wirehmfp == (DWORD)(DWORD_PTR)pmfp->hMF, "wirestgm + 0x1c should be pmfp->hMF instead of 0x%08x\n", *(DWORD *)wirehmfp);
GlobalUnlock(hmfp);
wirehmfp += sizeof(DWORD);
/* Note use (buffer_end - buffer) instead of size here, because size is an
* overestimate with native */
ok(*(DWORD *)wirehmfp == (buffer_end - buffer - 0x28), "wirestgm + 0x20 should be size - 0x34 instead of 0x%08x\n", *(DWORD *)wirehmfp);
wirehmfp += sizeof(DWORD);
ok(*(DWORD *)wirehmfp == (buffer_end - buffer - 0x28), "wirestgm + 0x24 should be size - 0x34 instead of 0x%08x\n", *(DWORD *)wirehmfp);
wirehmfp += sizeof(DWORD);
ok(*(WORD *)wirehmfp == 1, "wirehmfp + 0x28 should be 1 instead of 0x%08x\n", *(DWORD *)wirehmfp);
wirehmfp += sizeof(DWORD);
/* ... rest of data not tested - refer to tests for GetMetaFileBits
* at this point */
init_user_marshal_cb(&umcb, &stub_msg, &rpc_msg, buffer, size, MSHCTX_DIFFERENTMACHINE);
HMETAFILEPICT_UserUnmarshal(&umcb.Flags, buffer, &hmfp2);
ok(hmfp2 != NULL, "HMETAFILEPICT didn't unmarshal\n");
HeapFree(GetProcessHeap(), 0, buffer);
init_user_marshal_cb(&umcb, &stub_msg, &rpc_msg, NULL, 0, MSHCTX_DIFFERENTMACHINE);
HMETAFILEPICT_UserFree(&umcb.Flags, &hmfp2);
pmfp = GlobalLock(hmfp);
DeleteMetaFile(pmfp->hMF);
GlobalUnlock(hmfp);
GlobalFree(hmfp);
/* test NULL emf */
hmfp = NULL;
init_user_marshal_cb(&umcb, &stub_msg, &rpc_msg, NULL, 0, MSHCTX_DIFFERENTMACHINE);
size = HMETAFILEPICT_UserSize(&umcb.Flags, 0, &hmfp);
ok(size == 8, "size should be 8 bytes, not %d\n", size);
buffer = HeapAlloc(GetProcessHeap(), 0, size);
init_user_marshal_cb(&umcb, &stub_msg, &rpc_msg, buffer, size, MSHCTX_DIFFERENTMACHINE);
HMETAFILEPICT_UserMarshal(&umcb.Flags, buffer, &hmfp);
wirehmfp = buffer;
ok(*(DWORD *)wirehmfp == WDT_REMOTE_CALL, "wirestgm + 0x0 should be WDT_REMOTE_CALL instead of 0x%08x\n", *(DWORD *)wirehmfp);
wirehmfp += sizeof(DWORD);
ok(*(DWORD *)wirehmfp == (DWORD)(DWORD_PTR)hmfp, "wirestgm + 0x4 should be hmf instead of 0x%08x\n", *(DWORD *)wirehmfp);
wirehmfp += sizeof(DWORD);
hmfp2 = NULL;
init_user_marshal_cb(&umcb, &stub_msg, &rpc_msg, buffer, size, MSHCTX_DIFFERENTMACHINE);
HMETAFILEPICT_UserUnmarshal(&umcb.Flags, buffer, &hmfp2);
ok(hmfp2 == NULL, "NULL HMETAFILE didn't unmarshal\n");
HeapFree(GetProcessHeap(), 0, buffer);
init_user_marshal_cb(&umcb, &stub_msg, &rpc_msg, NULL, 0, MSHCTX_DIFFERENTMACHINE);
HMETAFILEPICT_UserFree(&umcb.Flags, &hmfp2);
}
开发者ID:pstrealer，项目名称:wine，代码行数:91，代码来源:usrmarshal.c
示例17: GetDC
int Screengrab::CaptureAnImage(HWND hWnd, std::wstring imageFilename)
{
HDC hdcScreen;
HDC hdcWindow;
HDC hdcMemDC = NULL;
HBITMAP hbmScreen = NULL;
BITMAP bmpScreen;
// Retrieve the handle to a display device context for the client
// area of the window.
hdcScreen = GetDC(NULL);
hdcWindow = GetDC(hWnd);
// Create a compatible DC which is used in a BitBlt from the window DC
hdcMemDC = CreateCompatibleDC(hdcWindow);
if (!hdcMemDC)
{
MessageBox(hWnd, L"CreateCompatibleDC has failed", L"Failed", MB_OK);
goto done;
}
// Get the client area for size calculation
RECT rcClient;
GetClientRect(hWnd, &rcClient);
//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,
rcClient.right, rcClient.bottom,
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