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NF:winuser.CreateMDIWindowA |
CreateMDIWindowA function (winuser.h) |
Creates a multiple-document interface (MDI) child window. (ANSI) |
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winmsg\createmdiwindow.htm |
winmsg |
VS|winui|~\winui\windowsuserinterface\windowing\multipledocumentinterface\multipledocumentinterfacereference\multipledocumentinterfacefunctions\createmdiwindow.htm |
12/05/2018 |
CreateMDIWindow, CreateMDIWindow function [Windows and Messages], CreateMDIWindowA, CreateMDIWindowW, WS_HSCROLL, WS_MAXIMIZE, WS_MINIMIZE, WS_VSCROLL, _win32_CreateMDIWindow, _win32_createmdiwindow_cpp, winmsg.createmdiwindow, winui._win32_createmdiwindow, winuser/CreateMDIWindow, winuser/CreateMDIWindowA, winuser/CreateMDIWindowW |
winuser.h |
Windows.h |
Windows |
Windows 2000 Professional [desktop apps only] |
Windows 2000 Server [desktop apps only] |
CreateMDIWindowW (Unicode) and CreateMDIWindowA (ANSI) |
User32.lib |
User32.dll |
Windows |
19H1 |
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Creates a multiple-document interface (MDI) child window.
Type: LPCTSTR
The window class of the MDI child window. The class name must have been registered by a call to the RegisterClassEx function.
Type: LPCTSTR
The window name. The system displays the name in the title bar of the child window.
Type: DWORD
The style of the MDI child window. If the MDI client window is created with the MDIS_ALLCHILDSTYLES window style, this parameter can be any combination of the window styles listed in the Window Styles page. Otherwise, this parameter is limited to one or more of the following values.
Type: int
The initial horizontal position, in client coordinates, of the MDI child window. If this parameter is CW_USEDEFAULT ((int)0x80000000), the MDI child window is assigned the default horizontal position.
Type: int
The initial vertical position, in client coordinates, of the MDI child window. If this parameter is CW_USEDEFAULT, the MDI child window is assigned the default vertical position.
Type: int
The initial width, in device units, of the MDI child window. If this parameter is CW_USEDEFAULT, the MDI child window is assigned the default width.
Type: int
The initial height, in device units, of the MDI child window. If this parameter is set to CW_USEDEFAULT, the MDI child window is assigned the default height.
Type: HWND
A handle to the MDI client window that will be the parent of the new MDI child window.
Type: HINSTANCE
A handle to the instance of the application creating the MDI child window.
Type: LPARAM
An application-defined value.
Type: HWND
If the function succeeds, the return value is the handle to the created window.
If the function fails, the return value is NULL. To get extended error information, call GetLastError.
Conceptual
Reference
Note
The winuser.h header defines CreateMDIWindow as an alias which automatically selects the ANSI or Unicode version of this function based on the definition of the UNICODE preprocessor constant. Mixing usage of the encoding-neutral alias with code that not encoding-neutral can lead to mismatches that result in compilation or runtime errors. For more information, see Conventions for Function Prototypes.