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Gets the width of the margin (in pixels) of a bitmap in an existing header control. You can use this macro or send the HDM_GETBITMAPMARGIN message explicitly.
Syntax
int Header_GetBitmapMargin(
HWND hwnd
);
Parameters
hwnd
Type: HWND
A handle to a header control.
Return value
Type: int
Returns the width of the bitmap margin in pixels. If the bitmap margin was not previously specified, the default value of 3*GetSystemMetrics (CX_EDGE) is returned.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows Vista [desktop apps only] |
| Minimum supported server | Windows Server 2003 [desktop apps only] |
| Target Platform | Windows |
| Header | commctrl.h |