The AdjustWindowRect function calculates the required size of the window rectangle, based on the desired client-rectangle size. The window rectangle can then be passed to the CreateWindow function to create a window whose client area is the desired size.
To specify an extended window style, use the AdjustWindowRectEx function.
Syntax
BOOL AdjustWindowRect(
LPRECT lpRect,
DWORD dwStyle,
BOOL bMenu
);
Parameters
- lpRect
-
[in, out] Pointer to a RECT structure that contains the coordinates of the top-left and bottom-right corners of the desired client area. When the function returns, the structure contains the coordinates of the top-left and bottom-right corners of the window to accommodate the desired client area.
- dwStyle
-
[in] Specifies the window style of the window whose required size is to be calculated. Note that you cannot specify the WS_OVERLAPPED style.
- bMenu
-
[in] Specifies whether the window has a menu.
Return Value
If the function succeeds, the return value is nonzero.
If the function fails, the return value is zero. To get extended error information, call GetLastError.
Remarks
A client rectangle is the smallest rectangle that completely encloses a client area. A window rectangle is the smallest rectangle that completely encloses the window, which includes the client area and the nonclient area.
The AdjustWindowRect function does not add extra space when a menu bar wraps to two or more rows.
The AdjustWindowRect function does not take the WS_VSCROLL or WS_HSCROLL styles into account. To account for the scroll bars, call the GetSystemMetrics function with SM_CXVSCROLL or SM_CYHSCROLL.
Function Information
| Minimum DLL Version | user32.dll |
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| Header | Declared in Winuser.h, include Windows.h |
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| Import library | User32.lib |
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| Minimum operating systems |
Windows 95, Windows NT 3.1 |
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| Unicode | Implemented as
Unicode version. |
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See Also