The DialogBox macro creates a modal dialog box from a dialog box template resource. DialogBox does not return control until the specified callback function terminates the modal dialog box by calling the EndDialog function. The DialogBox macro uses the DialogBoxParam function.
int DialogBox(
HINSTANCE hInstance, |
// handle to application instance |
LPCTSTR lpTemplate, |
// identifies dialog box template |
HWND hWndParent, |
// handle to owner window |
DLGPROC lpDialogFunc |
// pointer to dialog box procedure |
); |
If the function succeeds, the return value is the nResult parameter in the call to the EndDialog function used to terminate the dialog box.
If the function fails, the return value is -1. To get extended error information, call GetLastError.
The DialogBox macro uses the CreateWindowEx function to create the dialog box. DialogBox 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 (regardless of whether the template specifies the WS_VISIBLE style), disables the owner window, and starts its own message loop to retrieve and dispatch messages for the dialog box.
When the dialog box procedure calls the EndDialog function, DialogBox destroys the dialog box, ends the message loop, enables the owner window (if previously enabled), and returns the nResult parameter specified by the dialog box procedure when it called EndDialog.
Windows 95: The system can support a maximum of 16,364 window handles.
CreateDialog, CreateWindowEx, DialogBoxIndirect, DialogBoxIndirectParam, DialogBoxParam, DialogProc, EndDialog, MAKEINTRESOURCE, WM_INITDIALOG, WM_SETFONT
file: /Techref/os/win/api/win32/func/src/f16_14.htm, 4KB, , updated: 2000/4/7 11:19, local time: 2024/12/8 01:01,
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