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Creates a bitmap to be used by the thumbnail provider to display the thumbnail.
virtual BOOL GetThumbnail(
UINT cx,
HBITMAP* phbmp,
DWORD* pdwAlpha
);
Parameters
cx
Specifies the width and height of the bitmap.phbmp
Contains a handle to a bitmap, when the function returns successfully.pdwAlpha
Contains a DWORD specifying the alpha channel value, when the function returns successfully.
Return Value
Returns TRUE if a bitmap for the thumbnail was created successfully; otherwise FALSE.
Requirements
Header: afxwin.h