CDM_SETDEFEXT

The CDM_SETDEFEXT message sets the default filename extension for an Explorer-style Open or Save As common dialog box. The dialog box must have been created with the OFN_EXPLORER flag; otherwise, the message fails.

CDM_SETDEFEXT
wParam = 0; 
lParam = (LPARAM) (LPSTR) pszext; 
 
// corresponding macro
void CommDlg_OpenSave_SetDefExt(hdlg, pszext)
 

Parameters

hdlg

Handle of the common dialog box window to receive the message.

pszext

Pointer to the new filename extension. Must not include the dot (.).

Return Values

No return value.

QuickInfo

  Windows NT: Requires version 4.0 or later.
  Windows: Requires Windows 95 or later.
  Windows CE: Requires version 1.0 or later.
  Header: Declared in commdlg.h.

See Also

Common Dialog Box Library Overview, Common Dialog Box Messages, GetOpenFileName, GetSaveFileName, OPENFILENAME