func NewContextId(c *xgb.Conn) (Context, error) {
	id, err := c.NewId()
	if err != nil {
		return 0, err
	}
	return Context(id), nil
}

func NewSegId(c *xgb.Conn) (Seg, error) {
	id, err := c.NewId()
	if err != nil {
		return 0, err
	}
	return Seg(id), nil
}

func NewSurfaceId(c *xgb.Conn) (Surface, error) {
	id, err := c.NewId()
	if err != nil {
		return 0, err
	}
	return Surface(id), nil
}

func NewDamageId(c *xgb.Conn) (Damage, error) {
	id, err := c.NewId()
	if err != nil {
		return 0, err
	}
	return Damage(id), nil
}

// ReleaseOverlayWindowChecked sends a checked request.
// If an error occurs, it can be retrieved using ReleaseOverlayWindowCookie.Check()
func ReleaseOverlayWindowChecked(c *xgb.Conn, Window xproto.Window) ReleaseOverlayWindowCookie {
	if _, ok := c.Extensions["Composite"]; !ok {
		panic("Cannot issue request 'ReleaseOverlayWindow' using the uninitialized extension 'Composite'. composite.Init(connObj) must be called first.")
	}
	cookie := c.NewCookie(true, false)
	c.NewRequest(releaseOverlayWindowRequest(c, Window), cookie)
	return ReleaseOverlayWindowCookie{cookie}
}

// RedirectSubwindows sends an unchecked request.
// If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
func RedirectSubwindows(c *xgb.Conn, Window xproto.Window, Update byte) RedirectSubwindowsCookie {
	if _, ok := c.Extensions["Composite"]; !ok {
		panic("Cannot issue request 'RedirectSubwindows' using the uninitialized extension 'Composite'. composite.Init(connObj) must be called first.")
	}
	cookie := c.NewCookie(false, false)
	c.NewRequest(redirectSubwindowsRequest(c, Window, Update), cookie)
	return RedirectSubwindowsCookie{cookie}
}

// PutImageChecked sends a checked request.
// If an error occurs, it can be retrieved using PutImageCookie.Check()
func PutImageChecked(c *xgb.Conn, Drawable xproto.Drawable, Gc xproto.Gcontext, TotalWidth uint16, TotalHeight uint16, SrcX uint16, SrcY uint16, SrcWidth uint16, SrcHeight uint16, DstX int16, DstY int16, Depth byte, Format byte, SendEvent byte, Shmseg Seg, Offset uint32) PutImageCookie {
	if _, ok := c.Extensions["MIT-SHM"]; !ok {
		panic("Cannot issue request 'PutImage' using the uninitialized extension 'MIT-SHM'. shm.Init(connObj) must be called first.")
	}
	cookie := c.NewCookie(true, false)
	c.NewRequest(putImageRequest(c, Drawable, Gc, TotalWidth, TotalHeight, SrcX, SrcY, SrcWidth, SrcHeight, DstX, DstY, Depth, Format, SendEvent, Shmseg, Offset), cookie)
	return PutImageCookie{cookie}
}

// GetVersionUnchecked sends an unchecked request.
// If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
func GetVersionUnchecked(c *xgb.Conn, ClientMajorVersion uint16, ClientMinorVersion uint16) GetVersionCookie {
	if _, ok := c.Extensions["XC-MISC"]; !ok {
		panic("Cannot issue request 'GetVersion' using the uninitialized extension 'XC-MISC'. xcmisc.Init(connObj) must be called first.")
	}
	cookie := c.NewCookie(false, true)
	c.NewRequest(getVersionRequest(c, ClientMajorVersion, ClientMinorVersion), cookie)
	return GetVersionCookie{cookie}
}

// GetDrawableInfoUnchecked sends an unchecked request.
// If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
func GetDrawableInfoUnchecked(c *xgb.Conn, Screen uint32, Drawable uint32) GetDrawableInfoCookie {
	if _, ok := c.Extensions["XFREE86-DRI"]; !ok {
		panic("Cannot issue request 'GetDrawableInfo' using the uninitialized extension 'XFree86-DRI'. xf86dri.Init(connObj) must be called first.")
	}
	cookie := c.NewCookie(false, true)
	c.NewRequest(getDrawableInfoRequest(c, Screen, Drawable), cookie)
	return GetDrawableInfoCookie{cookie}
}

// QueryExtentsUnchecked sends an unchecked request.
// If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
func QueryExtentsUnchecked(c *xgb.Conn, DestinationWindow xproto.Window) QueryExtentsCookie {
	if _, ok := c.Extensions["SHAPE"]; !ok {
		panic("Cannot issue request 'QueryExtents' using the uninitialized extension 'SHAPE'. shape.Init(connObj) must be called first.")
	}
	cookie := c.NewCookie(false, true)
	c.NewRequest(queryExtentsRequest(c, DestinationWindow), cookie)
	return QueryExtentsCookie{cookie}
}

// GetXIDList sends a checked request.
// If an error occurs, it will be returned with the reply by calling GetXIDListCookie.Reply()
func GetXIDList(c *xgb.Conn, Count uint32) GetXIDListCookie {
	if _, ok := c.Extensions["XC-MISC"]; !ok {
		panic("Cannot issue request 'GetXIDList' using the uninitialized extension 'XC-MISC'. xcmisc.Init(connObj) must be called first.")
	}
	cookie := c.NewCookie(true, true)
	c.NewRequest(getXIDListRequest(c, Count), cookie)
	return GetXIDListCookie{cookie}
}

// MaskChecked sends a checked request.
// If an error occurs, it can be retrieved using MaskCookie.Check()
func MaskChecked(c *xgb.Conn, Operation Op, DestinationKind Kind, DestinationWindow xproto.Window, XOffset int16, YOffset int16, SourceBitmap xproto.Pixmap) MaskCookie {
	if _, ok := c.Extensions["SHAPE"]; !ok {
		panic("Cannot issue request 'Mask' using the uninitialized extension 'SHAPE'. shape.Init(connObj) must be called first.")
	}
	cookie := c.NewCookie(true, false)
	c.NewRequest(maskRequest(c, Operation, DestinationKind, DestinationWindow, XOffset, YOffset, SourceBitmap), cookie)
	return MaskCookie{cookie}
}

// OffsetChecked sends a checked request.
// If an error occurs, it can be retrieved using OffsetCookie.Check()
func OffsetChecked(c *xgb.Conn, DestinationKind Kind, DestinationWindow xproto.Window, XOffset int16, YOffset int16) OffsetCookie {
	if _, ok := c.Extensions["SHAPE"]; !ok {
		panic("Cannot issue request 'Offset' using the uninitialized extension 'SHAPE'. shape.Init(connObj) must be called first.")
	}
	cookie := c.NewCookie(true, false)
	c.NewRequest(offsetRequest(c, DestinationKind, DestinationWindow, XOffset, YOffset), cookie)
	return OffsetCookie{cookie}
}

// InputSelected sends a checked request.
// If an error occurs, it will be returned with the reply by calling InputSelectedCookie.Reply()
func InputSelected(c *xgb.Conn, DestinationWindow xproto.Window) InputSelectedCookie {
	if _, ok := c.Extensions["SHAPE"]; !ok {
		panic("Cannot issue request 'InputSelected' using the uninitialized extension 'SHAPE'. shape.Init(connObj) must be called first.")
	}
	cookie := c.NewCookie(true, true)
	c.NewRequest(inputSelectedRequest(c, DestinationWindow), cookie)
	return InputSelectedCookie{cookie}
}

// GetRectanglesUnchecked sends an unchecked request.
// If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
func GetRectanglesUnchecked(c *xgb.Conn, Window xproto.Window, SourceKind Kind) GetRectanglesCookie {
	if _, ok := c.Extensions["SHAPE"]; !ok {
		panic("Cannot issue request 'GetRectangles' using the uninitialized extension 'SHAPE'. shape.Init(connObj) must be called first.")
	}
	cookie := c.NewCookie(false, true)
	c.NewRequest(getRectanglesRequest(c, Window, SourceKind), cookie)
	return GetRectanglesCookie{cookie}
}

// Combine sends an unchecked request.
// If an error occurs, it can only be retrieved using xgb.WaitForEvent or xgb.PollForEvent.
func Combine(c *xgb.Conn, Operation Op, DestinationKind Kind, SourceKind Kind, DestinationWindow xproto.Window, XOffset int16, YOffset int16, SourceWindow xproto.Window) CombineCookie {
	if _, ok := c.Extensions["SHAPE"]; !ok {
		panic("Cannot issue request 'Combine' using the uninitialized extension 'SHAPE'. shape.Init(connObj) must be called first.")
	}
	cookie := c.NewCookie(false, false)
	c.NewRequest(combineRequest(c, Operation, DestinationKind, SourceKind, DestinationWindow, XOffset, YOffset, SourceWindow), cookie)
	return CombineCookie{cookie}
}

// UnredirectWindowChecked sends a checked request.
// If an error occurs, it can be retrieved using UnredirectWindowCookie.Check()
func UnredirectWindowChecked(c *xgb.Conn, Window xproto.Window, Update byte) UnredirectWindowCookie {
	if _, ok := c.Extensions["Composite"]; !ok {
		panic("Cannot issue request 'UnredirectWindow' using the uninitialized extension 'Composite'. composite.Init(connObj) must be called first.")
	}
	cookie := c.NewCookie(true, false)
	c.NewRequest(unredirectWindowRequest(c, Window, Update), cookie)
	return UnredirectWindowCookie{cookie}
}

// QueryVersion sends a checked request.
// If an error occurs, it will be returned with the reply by calling QueryVersionCookie.Reply()
func QueryVersion(c *xgb.Conn) QueryVersionCookie {
	if _, ok := c.Extensions["SHAPE"]; !ok {
		panic("Cannot issue request 'QueryVersion' using the uninitialized extension 'SHAPE'. shape.Init(connObj) must be called first.")
	}
	cookie := c.NewCookie(true, true)
	c.NewRequest(queryVersionRequest(c), cookie)
	return QueryVersionCookie{cookie}
}

// CreateRegionFromBorderClipChecked sends a checked request.
// If an error occurs, it can be retrieved using CreateRegionFromBorderClipCookie.Check()
func CreateRegionFromBorderClipChecked(c *xgb.Conn, Region xfixes.Region, Window xproto.Window) CreateRegionFromBorderClipCookie {
	if _, ok := c.Extensions["Composite"]; !ok {
		panic("Cannot issue request 'CreateRegionFromBorderClip' using the uninitialized extension 'Composite'. composite.Init(connObj) must be called first.")
	}
	cookie := c.NewCookie(true, false)
	c.NewRequest(createRegionFromBorderClipRequest(c, Region, Window), cookie)
	return CreateRegionFromBorderClipCookie{cookie}
}

// AttachChecked sends a checked request.
// If an error occurs, it can be retrieved using AttachCookie.Check()
func AttachChecked(c *xgb.Conn, Shmseg Seg, Shmid uint32, ReadOnly bool) AttachCookie {
	if _, ok := c.Extensions["MIT-SHM"]; !ok {
		panic("Cannot issue request 'Attach' using the uninitialized extension 'MIT-SHM'. shm.Init(connObj) must be called first.")
	}
	cookie := c.NewCookie(true, false)
	c.NewRequest(attachRequest(c, Shmseg, Shmid, ReadOnly), cookie)
	return AttachCookie{cookie}
}