我使用SetWindowsHookEx监视另一个应用程序。当用户在程序中单击鼠标时，我使用PostMessage向程序发送消息。
我遇到的问题是，有时我的消息在 WM_LBUTTONUP之前到达。如何确保我的邮件> WM_LBUTTONUP后 >
我使用Gma.UserActivityMonitor监控并跟踪代码以发送消息：
HookManager.MouseUp += HookManagerMouseUp;
void HookManagerMouseUp(object sender, MouseEventArgs e)
{
uint ret;
uint attachedThredId = GetCurrentThreadId();
uint attachedProcessId = GetWindowThreadProcessId(ActiveWindow, out ret);
AttachThreadInputSafe(attachedThredId, attachedProcessId, true);
PostMessage(ActiveControlInWindow, Message.KeyDown, 'A', 0x1);
PostMessage(ActiveControlInWindow, Message.KeyUp, 'A', 0xC0010001);
AttachThreadInputSafe(attachedThredId, attachedProcessId, false);
}
我使用PostMessage发送击键是因为即使主机应用程序未处于活动状态我也想这样做。
Gma.UserActivityMonitor中的钩子如下：
s_MouseDelegate = MouseHookProc;
s_MouseHookHandle = SetWindowsHookEx(
WH_MOUSE_LL,
s_MouseDelegate,
Marshal.GetHINSTANCE(
Assembly.GetExecutingAssembly().GetModules()[0]),
0);
我使用Spy ++来监控到达应用程序的消息。当消息以正确的顺序到达时，我得到以下结果：
S WM_MOUSEACTIVATE hwndTopLevel:00030A46 nHittest:HTCLIENT uMsg:WM_LBUTTONDOWN
R WM_MOUSEACTIVATE fuActivate:MA_ACTIVATE
S WM_KILLFOCUS hwndGetFocus:00020A32
R WM_KILLFOCUS
S WM_IME_SETCONTEXT fSet:1 iShow:C000000F
R WM_IME_SETCONTEXT
S WM_SETFOCUS hwndLoseFocus:00030A46
R WM_SETFOCUS
P WM_LBUTTONDOWN fwKeys:MK_LBUTTON xPos:278 yPos:73
S WM_ERASEBKGND hdc:0E010DEE
R WM_ERASEBKGND fErased:True
P WM_LBUTTONUP fwKeys:0000 xPos:278 yPos:73
S WM_CAPTURECHANGED hwndNewCapture:00000000
R WM_CAPTURECHANGED
P WM_KEYDOWN nVirtKey:VK_OEM_5 cRepeat:1 ScanCode:00 fExtended:0 fAltDown:0 fRepeat:0 fUp:0
P WM_KEYUP nVirtKey:VK_OEM_5 cRepeat:1 ScanCode:01 fExtended:0 fAltDown:0 fRepeat:1 fUp:1
P WM_CHAR chCharCode:'167' (167) cRepeat:1 ScanCode:00 fExtended:0 fAltDown:0 fRepeat:0 fUp:0
P WM_KEYDOWN nVirtKey:'2' cRepeat:1 ScanCode:00 fExtended:0 fAltDown:0 fRepeat:0 fUp:0
P WM_KEYUP nVirtKey:'2' cRepeat:1 ScanCode:01 fExtended:0 fAltDown:0 fRepeat:1 fUp:1
P WM_KEYDOWN nVirtKey:'2' cRepeat:1 ScanCode:00 fExtended:0 fAltDown:0 fRepeat:0 fUp:0
P WM_KEYUP nVirtKey:'2' cRepeat:1 ScanCode:01 fExtended:0 fAltDown:0 fRepeat:1 fUp:1
P WM_CHAR chCharCode:'50' (50) cRepeat:1 ScanCode:00 fExtended:0 fAltDown:0 fRepeat:0 fUp:0
P WM_CHAR chCharCode:'50' (50) cRepeat:1 ScanCode:00 fExtended:0 fAltDown:0 fRepeat:0 fUp:0
S WM_KILLFOCUS hwndGetFocus:(null)
R WM_KILLFOCUS
S WM_IME_SETCONTEXT fSet:0 iShow:C000000F
R WM_IME_SETCONTEXT
当消息以错误的顺序到达时，我得到以下结果（注意WM_LBUTTONUP在 WM_CHAR处理完毕后到达）：
S WM_MOUSEACTIVATE hwndTopLevel:00030A46 nHittest:HTCLIENT uMsg:WM_LBUTTONDOWN
R WM_MOUSEACTIVATE fuActivate:MA_ACTIVATE
S WM_KILLFOCUS hwndGetFocus:00020A32
R WM_KILLFOCUS
S WM_IME_SETCONTEXT fSet:1 iShow:C000000F
R WM_IME_SETCONTEXT
S WM_SETFOCUS hwndLoseFocus:00030A46
R WM_SETFOCUS
P WM_LBUTTONDOWN fwKeys:MK_LBUTTON xPos:329 yPos:166
S WM_ERASEBKGND hdc:1E0117FD
R WM_ERASEBKGND fErased:True
P WM_KEYDOWN nVirtKey:VK_OEM_5 cRepeat:1 ScanCode:00 fExtended:0 fAltDown:0 fRepeat:0 fUp:0
P WM_KEYUP nVirtKey:VK_OEM_5 cRepeat:1 ScanCode:01 fExtended:0 fAltDown:0 fRepeat:1 fUp:1
P WM_KEYDOWN nVirtKey:'2' cRepeat:1 ScanCode:00 fExtended:0 fAltDown:0 fRepeat:0 fUp:0
P WM_KEYUP nVirtKey:'2' cRepeat:1 ScanCode:01 fExtended:0 fAltDown:0 fRepeat:1 fUp:1
P WM_KEYDOWN nVirtKey:'2' cRepeat:1 ScanCode:00 fExtended:0 fAltDown:0 fRepeat:0 fUp:0
P WM_KEYUP nVirtKey:'2' cRepeat:1 ScanCode:01 fExtended:0 fAltDown:0 fRepeat:1 fUp:1
P WM_CHAR chCharCode:'167' (167) cRepeat:1 ScanCode:00 fExtended:0 fAltDown:0 fRepeat:0 fUp:0
P WM_CHAR chCharCode:'50' (50) cRepeat:1 ScanCode:00 fExtended:0 fAltDown:0 fRepeat:0 fUp:0
P WM_CHAR chCharCode:'50' (50) cRepeat:1 ScanCode:00 fExtended:0 fAltDown:0 fRepeat:0 fUp:0
P WM_LBUTTONUP fwKeys:0000 xPos:329 yPos:166
S WM_CAPTURECHANGED hwndNewCapture:00000000
R WM_CAPTURECHANGED
S WM_KILLFOCUS hwndGetFocus:(null)
R WM_KILLFOCUS
S WM_IME_SETCONTEXT fSet:0 iShow:C000000F
R WM_IME_SETCONTEXT
当一个或另一个发生时，我可以看到它是随机的。如果我在发布消息之前添加延迟，它会起作用。但我不想使用延迟。
答案 0 :(得分：1)
您看到此行为（其他挂钩，系统模态循环）有很多原因，但最明显的原因是在将WM_nBUTTONUP消息发布到线程之前，您的挂钩会得到通知。
您可以获得所需行为的唯一可靠方法是使用全局钩子，以便您在获取消息的过程中执行。您可能需要使用WH_CALLWNDPROCRET挂钩，以便在处理消息后，您的挂钩被称为。
答案 1 :(得分：-1)
使用MOUSE_LL挂钩，并在收到WM_*BUTTONUP时发布消息。
http://msdn.microsoft.com/en-us/library/ms644986(VS.85).aspx