识别鼠标是放在文本文件上还是控件上.txt

来自「图像处理学习的一些心得」· 文本 代码 · 共 23 行

用WindowFromPoint或ChildWindowFromPoint获得控件的句柄，然后用GetClassName判断窗口类，文本框是Edit，按钮是Button


The WindowFromPoint function retrieves a handle to the window that contains the specified point. 

HWND WindowFromPoint(
  POINT Point  // point
);


int GetClassName(
  HWND hWnd,           // handle to window
  LPTSTR lpClassName,  // class name
  int nMaxCount        // size of class name buffer
);
Parameters
hWnd 
[in] Handle to the window and, indirectly, the class to which the window belongs. 
lpClassName 
[out] Pointer to the buffer that is to receive the class name string. 
nMaxCount 
[in] Specifies the length, in TCHARs, of the buffer pointed to by the lpClassName parameter. The class name string is truncated if it is longer than the buffer.