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Retrieves the identifier of the default push button control for a dialog box.
#define WM_USER 0x0400
#define DM_GETDEFID (WM_USER+0)
Parameters
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wParam
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This parameter is not used and must be zero.
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lParam
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This parameter is not used and must be zero.
Return value
If a default push button exists, the high-order word of the return value contains the value DC_HASDEFID and the low-order word contains the control identifier. Otherwise, the return value is zero.
Remarks
The DefDlgProc function processes this message.
Requirements
Requirement | Value |
---|---|
Minimum supported client |
Windows 2000 Professional [desktop apps only] |
Minimum supported server |
Windows 2000 Server [desktop apps only] |
Header |
|
See also
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Reference
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Conceptual