CreateDialog

The CreateDialog macro creates a modeless dialog box from a dialog box template resource. The CreateDialog macro uses the CreateDialogParam function.

HWND CreateDialog(
  HINSTANCE hInstance,  // handle to application instance
  LPCTSTR lpTemplate,   // identifies dialog box template name
  HWND hWndParent,      // handle to owner window
  DLGPROC lpDialogFunc  // pointer to dialog box procedure
);
 

Parameters

hInstance

Identifies an instance of the module whose executable file contains the dialog box template.

lpTemplate

Identifies 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 its low-order word must contain the identifier. You can use the MAKEINTRESOURCE macro to create this value.

hWndParent

Identifies the window that owns the dialog box.

lpDialogFunc

Pointer to the dialog box procedure. For more information about the dialog box procedure, see DialogProc.

Return Values

If the function succeeds, the return value is the handle to the dialog box.

If the function fails, the return value is NULL. To get extended error information, call GetLastError.

Remarks

The CreateDialog function uses the CreateWindowEx function to create the dialog box. CreateDialog then sends a WM_INITDIALOG message (and a WM_SETFONT message if the template specifies the DS_SETFONT style) to the dialog box procedure. The function displays the dialog box if the template specifies the WS_VISIBLE style. Finally, CreateDialog returns the window handle to the dialog box.

After CreateDialog returns, the application displays the dialog box (if it is not already displayed) by using the ShowWindow function. The application destroys the dialog box by using the DestroyWindow function.

Windows 95 and later: The system can support a maximum of 255 controls per dialog box template. To place more than 255 controls in a dialog box, create the controls in the WM_INITDIALOG message handler rather than placing them in the template.

Windows CE: Not all styles are supported in the DLGTEMPLATE structure in the dialog template referred to by the lpTemplate parameter.

QuickInfo

  Windows NT: Requires version 3.1 or later.
  Windows: Requires Windows 95 or later.
  Windows CE: Requires version 1.0 or later.
  Header: Declared in winuser.h.
  Import Library: Use user32.lib.
  Unicode: Implemented as Unicode and ANSI versions on Windows NT.

See Also

Dialog Boxes Overview, Dialog Box Functions, CreateDialogIndirect, CreateDialogIndirectParam, CreateDialogParam, CreateWindowEx, DestroyWindow, DialogBox, DialogProc, ShowWindow, WM_INITDIALOG, WM_SETFONT