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4/8/2010

This function creates a modeless dialog box from a dialog box template resource. Before displaying the dialog box, it passes an application-defined value to the dialog box procedure as the lParamparameter of the WM_INITDIALOG message. An application can use this value to initialize dialog box controls.

Syntax 

HWND CreateDialogParam( 
  HINSTANCE 
hInstance, 
  LPCTSTR 
lpTemplateName, 
  HWND 
hWndParent, 
  DLGPROC 
lpDialogFunc, 
  LPARAM 
dwInitParam
);

Parameters

hInstance

[in] Handle to the module whose executable file contains the dialog box template.

lpTemplateName

[in] Long pointer to the dialog box template. This parameter is either the pointer to a null-terminated character string that specifies the name of the dialog box template or an integer value that specifies the resource identifier of the dialog box template. If the parameter specifies a resource identifier, its high-order word must be zero and low-order word must contain the identifier. You can use the MAKEINTRESOURCEmacro to create this value.

hWndParent

[in] Handle to the window that owns the dialog box.

lpDialogFunc

[in] Long pointer to the dialog box procedure. For more information about the dialog box procedure, see DialogProc.

dwInitParam

[in] Specifies the value to pass to the dialog box procedure in the lParamparameter in the WM_INITDIALOG message.

Return Value

The window handle to the dialog box indicates success. NULL indicates failure. To get extended error information, call GetLastError.

Remarks

The CreateDialogParamfunction uses the CreateWindowExfunction to create the dialog box. CreateDialogParamthen sends a WM_INITDIALOG message to the dialog box procedure. The function displays the dialog box if the template specifies the WS_VISIBLE style. Finally, CreateDialogParamreturns the window handle of the dialog box.

After CreateDialogParamreturns, the application displays the dialog box (if it is not already displayed) by using the ShowWindowfunction. The application destroys the dialog box by using the DestroyWindowfunction.

Windows Embedded CE does not support all styles in the DLGTEMPLATEstructure. This structure is in the template identified by the lpTemplateparameter .

Requirements

Header winuser.h
Windows Embedded CE Windows CE 1.0 and later
Windows Mobile Windows Mobile Version 5.0 and later

See Also