VC++ GetClientRect

最新推荐文章于 2024-10-01 13:22:02 发布

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#vc++ #structure #function

本文介绍了GetClientRect函数的使用方法，该函数用于获取指定窗口的客户端区域坐标。文章详细解释了函数参数的意义及返回值，并提供了注意事项。

GetClientRect Function

The GetClientRect function retrieves the coordinates of a window's client area. The client coordinates specify the upper-left and lower-right corners of the client area. Because client coordinates are relative to the upper-left corner of a window's client area, the coordinates of the upper-left corner are (0,0).

Syntax

BOOL GetClientRect(      
    HWND hWnd,
    LPRECT lpRect
);

Parameters

hWnd
[in] Handle to the window whose client coordinates are to be retrieved.
lpRect
[out] Pointer to a RECT structure that receives the client coordinates. The left and top members are zero. The right and bottom members contain the width and height of the window.

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

In conformance with conventions for the RECT structure, the bottom-right coordinates of the returned rectangle are exclusive. In other words, the pixel at (right, bottom) lies immediately outside the rectangle.

Example