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NS:winuser.tagUPDATELAYEREDWINDOWINFO |
UPDATELAYEREDWINDOWINFO (winuser.h) |
Used by UpdateLayeredWindowIndirect to provide position, size, shape, content, and translucency information for a layered window. |
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winmsg\updatelayeredwindowinfo.htm |
winmsg |
VS|winui|~\winui\windowsuserinterface\windowing\windows\windowreference\windowstructures\updatelayeredwindowinfo.htm |
12/05/2018 |
*PUPDATELAYEREDWINDOWINFO, PUPDATELAYEREDWINDOWINFO, PUPDATELAYEREDWINDOWINFO structure pointer [Windows and Messages], ULW_ALPHA, ULW_COLORKEY, ULW_EX_NORESIZE, ULW_OPAQUE, UPDATELAYEREDWINDOWINFO, UPDATELAYEREDWINDOWINFO structure [Windows and Messages], _win32_UPDATELAYEREDWINDOWINFO, _win32_updatelayeredwindowinfo_cpp, winmsg.updatelayeredwindowinfo, winui._win32_updatelayeredwindowinfo, winuser/PUPDATELAYEREDWINDOWINFO, winuser/UPDATELAYEREDWINDOWINFO |
winuser.h |
Windows.h |
Windows |
Windows Vista [desktop apps only] |
Windows Server 2008 [desktop apps only] |
Windows |
UPDATELAYEREDWINDOWINFO, *PUPDATELAYEREDWINDOWINFO |
19H1 |
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Used by UpdateLayeredWindowIndirect to provide position, size, shape, content, and translucency information for a layered window.
Type: DWORD
The size, in bytes, of this structure.
Type: HDC
A handle to a DC for the screen. This handle is obtained by specifying NULL in this member when calling UpdateLayeredWindowIndirect. The handle is used for palette color matching when the window contents are updated. If hdcDst is NULL, the default palette is used.
If hdcSrc is NULL, hdcDst must be NULL.
Type: const POINT*
The new screen position of the layered window. If the new position is unchanged from the current position, pptDst can be NULL.
Type: const SIZE*
The new size of the layered window. If the size of the window will not change, this parameter can be NULL. If hdcSrc is NULL, psize must be NULL.
Type: HDC
A handle to the DC for the surface that defines the layered window. This handle can be obtained by calling the CreateCompatibleDC function. If the shape and visual context of the window will not change, hdcSrc can be NULL.
Type: const POINT*
The location of the layer in the device context. If hdcSrc is NULL, pptSrc should be NULL.
Type: COLORREF
The color key to be used when composing the layered window. To generate a COLORREF, use the RGB macro.
Type: const BLENDFUNCTION*
The transparency value to be used when composing the layered window.
Type: DWORD
This parameter can be one of the following values.
| Value | Meaning |
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Use pblend as the blend function. If the display mode is 256 colors or less, the effect of this value is the same as the effect of ULW_OPAQUE. |
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Use crKey as the transparency color. |
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Draw an opaque layered window. |
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Force the UpdateLayeredWindowIndirect function to fail if the current window size does not match the size specified in the psize. |
If hdcSrc is NULL, dwFlags should be zero.
Type: const RECT*
The area to be updated. This parameter can be NULL. If it is non-NULL, only the area in this rectangle is updated from the source DC.
Conceptual
Reference