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DialogBoxIndirectParam info  Overview  Group

The DialogBoxIndirectParam function creates a modal dialog box from a dialog box template in memory. Before displaying the dialog box, the function passes an application-defined value to the dialog box procedure as the lParam parameter of the WM_INITDIALOG message. An application can use this value to initialize dialog box controls.

int DialogBoxIndirectParam(

    HINSTANCE hInstance,

// handle to application instance

    LPCDLGTEMPLATE hDialogTemplate,

// identifies dialog box template

    HWND hWndParent,

// handle to owner window

    DLGPROC lpDialogFunc,

// pointer to dialog box procedure

    LPARAM dwInitParam 

// initialization value



Identifies the instance of the module that creates the dialog box.
Pointer to a global memory object containing a template that DialogBoxIndirectParam uses to create the dialog box. A dialog box template consists of a header that describes the dialog box, followed by one or more additional blocks of data that describe each of the controls in the dialog box. The template can use either the standard format or the extended format.

In a standard template for a dialog box, the header is a DLGTEMPLATE structure followed by additional variable-length arrays. The data for each control consists of a DLGITEMTEMPLATE structure followed by additional variable-length arrays.

In an extended template for a dialog box, the header uses the DLGTEMPLATEEX format and the control definitions use the DLGITEMTEMPLATEEX format.

Identifies the window that owns the dialog box.
Pointer to the dialog box procedure. For more information about the dialog box procedure, see DialogProc.
Specifies the value to pass to the dialog box in the lParam parameter of the WM_INITDIALOG message.

Return Values

If the function succeeds, the return value is the nResult parameter specified in the call to the EndDialog function that was used to terminate the dialog box.

If the function fails, the return value is -1. To get extended error information, call GetLastError.


file: /Techref/os/win/api/win32/func/src/f16_16.htm, 4KB, , updated: 2000/4/7 12:19, local time: 2023/6/10 07:06,

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