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NF:shobjidl_core.IDragSourceHelper.InitializeFromBitmap |
IDragSourceHelper::InitializeFromBitmap (shobjidl_core.h) |
Initializes the drag-image manager for a windowless control. |
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shell\IDragSourceHelper_InitializeFromBitmap.htm |
shell |
d50be9c9-f407-4386-bb8f-04c849205359 |
12/05/2018 |
IDragSourceHelper interface [Windows Shell],InitializeFromBitmap method, IDragSourceHelper.InitializeFromBitmap, IDragSourceHelper::InitializeFromBitmap, InitializeFromBitmap, InitializeFromBitmap method [Windows Shell], InitializeFromBitmap method [Windows Shell],IDragSourceHelper interface, _win32_IDragSourceHelper_InitializeFromBitmap, shell.IDragSourceHelper_InitializeFromBitmap, shobjidl_core/IDragSourceHelper::InitializeFromBitmap |
shobjidl_core.h |
Shobjidl.h |
Windows |
Windows 2000 Professional, Windows XP [desktop apps only] |
Windows Server 2003 [desktop apps only] |
Shobjidl.idl |
Shell32.dll (version 5.0 or later) |
Windows |
19H1 |
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Initializes the drag-image manager for a windowless control.
Type: LPSHDRAGIMAGE
The SHDRAGIMAGE structure that contains information about the bitmap.
Type: IDataObject*
A pointer to the data object's IDataObject interface.
Type: HRESULT
If this method succeeds, it returns S_OK. Otherwise, it returns an HRESULT error code.
Because InitializeFromBitmap always performs the RGB multiplication step in calculating the alpha value, you should always pass a bitmap without premultiplied alpha blending. Note that no error will result from passing the method a bitmap with premultiplied alpha blending, but this method will multiply it again, doubling the resulting alpha value.