WindowsAPIUser32dll详细介绍.doc

如果你不想自己的程序被从Ctrl+Alt+Del弹出的窗口中强行关闭, 介绍一个Windows未公布的API函数给你: RegisterServiceProcess(ProcessID:Long,Type:Long) 该函数存在于Kernal32.dll中. Process指向进程的ID,Type表示是否向系统注册该进程,是1,否0.= = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =GetClientRect函数功能：该函数获取窗口客户区的坐标。客户区坐标指定客户区的左上角和右下角。由于客户区坐标是相对子窗口客户区的左上角而言的，因此左上角坐标为（0，0）函数原型：BOOL GetClientRect（HWND hWnd，LPRECT lpRect）；参数：GetLastError 函数。备注：Windows CE：命令条包含在客户区中。速查：Windows NT: 3.1以上版本：Windows：95以上版本： Windows CE：1.0以上版本：头文件：winuser.h；库文件：user32.lib= = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =GetDesktopWindow函数功能：该函数返回桌面窗口的句柄。桌面窗口覆盖整个屏幕。桌面窗口是一个要在其上绘制所有的图标和其他窗口的区域。函数原型：HWND GetDesktopWindow（VOID）参数：无。返回值：函数返回桌面窗口的句柄。速查：Windows NT：3.1以上版本；Windows：95以上版本：Windows CE：不支持；头文件：Winuser.h；库文件：user32.lib。= = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =GetForegroundwindow函数功能：该函数返回前台窗口（用户当前工作的窗口）。系统分配给产生前台窗口的线程一个稍高一点的优先级。函数原型：HWND GetForegroundwindow（VOID）参数：无。返回值：函数返回前台窗回的句柄。速查：Windows NT：3.1以上版本；Windows：95以上版本：Windows CE：1.0以上版本：头文件：Winuser.h；库文件：user32.lib。= = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =GetLastActivePopup 函数功能：该函数确定指定窗口中的哪一个弹出式窗口是最近活动的窗口。函数原型：HWND GetLastActivePopup（HWND hWnd）；参数：hWnd:所有者窗口句柄。返回值：返回值标识了最近活动的弹出式窗口的句柄。如果满足下列任一条件，则返回值与参数hWnd相同：由hWnd指定的窗口是最近活动的：由hWnd指定的窗口不拥有任何弹出式窗口；由hWnd指定的窗口不是顶层窗口或它属于其他窗口。速查：Windows：3.1以上版本；Windows：95以上版本：Windows CE：不支持；头文件：winuser.h；库文件：user32.lib。= = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =GetNextWindow函数功能：该函数返回z序中的前一个或后一个窗口的句柄。下一窗口在指定窗口的下面，前一窗口则在上面。如果指定的窗口是顶端窗口，该