AdjustWindowRect

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.

Declaration Declare Function AdjustWindowRect Lib "user32" Alias "AdjustWindowRect" (lpRect As RECT, ByVal dwStyle As Long, ByVal bMenu As Long) As Long
Parameters
  • lpRect
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
Specifies the window styles of the window whose required size is to be calculated.
  • bMenu
Specifies whether the window has a menu.
Return Values 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.
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