模拟ctrl+alt+delete三键模拟ctrl+alt+delete三键2006-10-28 8:00:38模拟ctrl+alt+delete三键2006-10-28 8:00:38模拟ctrl+alt+delete三键

在我们编写远程控制软件的时候，我们会发现要想解锁server端我们就得发送这三个键的虚拟。

下面我说一下解决过程

1.一开始，决定通过keybd_event()来模拟键盘

 keybd_event(VK_CONTROL,MapVirtualKey(VK_CONTROL,0),0,0);      keybd_event(VK_MENU,MapVirtualKey(VK_MENU,0),0,0);      keybd_event(VK_DELETE,MapVirtualKey(VK_DELETE,0),0,0);        keybd_event(VK_DELETE,MapVirtualKey(VK_DELETE,0),KEYEVENTF_KEYUP,0);     keybd_event(VK_MENU,MapVirtualKey(VK_MENU,0),KEYEVENTF_KEYUP,0);      keybd_event(VK_CONTROL,MapVirtualKey(VK_CONTROL,0),KEYEVENTF_KEYUP,0); 发现只能模拟ctrl+alt两个键的效果，然而其他的两个键的都可以模拟比如win+d。不知道是不是keybd_event()只能模拟两键还是因为ctrl+alt+delete的特殊性，望高手告之，在此谢过。

2.运用PostMessage(HWND_BROADCAST, WM_HOTKEY, 0, MAKELONG(MOD_ALT | MOD_CONTROL, VK_DELETE));来发送虚拟键盘，但是在winNT以后的系统里我们还有很多事情要做，比如：OpenDesktop()、OpenInputDesktop()、GetThreadDesktop()、SetThreadDesktop()、CloseDesktop()、GetUserObjectInformation()

代码如下：

#include "windows.h"BOOL simulateAltControlDel();void main(){    simulateAltControlDel();}BOOL simulateAltControlDel(){    HDESK   hdeskCurrent;    HDESK   hdesk;    HWINSTA hwinstaCurrent;    HWINSTA hwinsta;    //     // Save the current Window station    //     hwinstaCurrent = GetProcessWindowStation();    if (hwinstaCurrent == NULL)        return FALSE;    //     // Save the current desktop    //     hdeskCurrent = GetThreadDesktop(GetCurrentThreadId());    if (hdeskCurrent == NULL)        return FALSE;    //     // Obtain a handle to WinSta0 - service must be running    // in the LocalSystem account    //     hwinsta = OpenWindowStation("winsta0", FALSE,                              WINSTA_ACCESSCLIPBOARD   |                              WINSTA_ACCESSGLOBALATOMS |                              WINSTA_CREATEDESKTOP     |                              WINSTA_ENUMDESKTOPS      |                              WINSTA_ENUMERATE         |                              WINSTA_EXITWINDOWS       |                              WINSTA_READATTRIBUTES    |                              WINSTA_READSCREEN        |                              WINSTA_WRITEATTRIBUTES);    if (hwinsta == NULL)        return FALSE;    //     // Set the windowstation to be winsta0    //     if (!SetProcessWindowStation(hwinsta))     return FALSE;

    //     // Get the default desktop on winsta0    //     hdesk = OpenDesktop("Winlogon", 0, FALSE,                        DESKTOP_CREATEMENU |              DESKTOP_CREATEWINDOW |                        DESKTOP_ENUMERATE    |                        DESKTOP_HOOKCONTROL  |                        DESKTOP_JOURNALPLAYBACK |                        DESKTOP_JOURNALRECORD |                        DESKTOP_READOBJECTS |                        DESKTOP_SWITCHDESKTOP |                        DESKTOP_WRITEOBJECTS);    if (hdesk == NULL)       return FALSE;

    //     // Set the desktop to be "default"    //     if (!SetThreadDesktop(hdesk))       return FALSE;    PostMessage(HWND_BROADCAST,WM_HOTKEY,0,MAKELPARAM(MOD_ALT|MOD_CONTROL,VK_DELETE));

    //     // Reset the Window station and desktop    //     if (!SetProcessWindowStation(hwinstaCurrent))       return FALSE;

    if (!SetThreadDesktop(hdeskCurrent))    return FALSE;

    //     // Close the windowstation and desktop handles    //     if (!CloseWindowStation(hwinsta))        return FALSE;    if (!CloseDesktop(hdesk))        return FALSE;    return TRUE;}

偶一开始试验了发现不成功，后来冰河大哥告诉我说OpenDesktop("Winlogon", ......)本身需要LocalSystem权限，果然如此，把它注册成服务，然后效果实现。相信如何注册成服务不用我说了吧。ok，我们想要的功能实现了。

3.还有一种方法Dos下键盘的完全控制 ------- 一系列的BIOS级别的键盘控制函数！http://dev.csdn.net/develop/article/7/7181.shtm我没有试验，不知道可否，哪位大哥试验后告诉我一声

在此再次感谢黄鑫大哥！！

模拟ctrl+alt+delete三键模拟ctrl+alt+delete三键2006-10-28 8:00:38模拟ctrl+alt+delete三键2006-10-28 8:00:38模拟ctrl+alt+delete三键