GetDesktopWindow和GetWindow区别

GetWindow

The GetWindow function retrieves a handle to a window that has the specified relationship (Z order or owner) to the specified window.

HWND GetWindow(
HWND hWnd,  // handle to original window
  UINT uCmd   // relationship flag
);

GetDesktopWindow

The GetDesktopWindow function returns a handle to the desktop window. The desktop window covers the entire screen. The desktop window is the area on top of which all icons and other windows are painted.

[code]HWND GetDesktopWindow(VOID)

[/code]

注释:GetDesktopWindow该函数返回桌面窗口的句柄;GetWindow该函数返回与指定窗口有特定关系（如Z序或所有者）的窗口句柄。

该特定的关系是通过UINT uCmd 值体现的.

下面来解释一下什么叫桌面窗口的句柄:桌面也是个窗口,成为桌面窗口,它是由windows操作系统创建的和管理的.