LONG DefDlgProc(hDlg,wMsg,wParam,lParam)
This function provides default processing for any Windows messages that a dialog box with a private window class does not process.
All window messages that are not explicitly processed by the window function must be passed to the DefDlgProc function, not the DefWindowProc function. This ensures that all messages not handled by their private window procedure will be handled properly.
| Parameter | Type/Description |
| hDlg | HWND Identifies the dialog box. | |
| wMsg | WORD Specifies the message number. | |
| wParam | WORD Specifies 16 bits of additional message-dependent information. | |
| lParam | DWORD Specifies 32 bits of additional message-dependent information. |
The return value specifies the result of the message processing and depends on the actual message sent.
The source code for the DefDlgProc function is provided on the SDK disks.
An application creates a dialog box by calling one of the following functions:
| Function | Description |
| CreateDialog | Creates a modeless dialog box. | |
| CreateDialogIndirect | Creates a modeless dialog box. | |
| CreateDialogIndirectParam, Creates a modeless dialog box and passes data to it when it is created. | ||
| CreateDialogParam | Creates a modeless dialog box and passes data to it when it is created. | |
| DialogBox | Creates a modal dialog box. | |
| DialogBoxIndirect | Creates a modal dialog box. | |
| DialogBoxIndirectParam | Creates a modal dialog box and passes data to it when it is created. | |
| DialogBoxParam | Creates a modal dialog box and passes data to it when it is created. | |