C# 在用户单击鼠标按钮后发布消息

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，有时我的信息在WM_LBUTTONUP之前到达。如何确保我的信息在WM_LBUTTONUP之后到达

我使用以下代码来监视和发送消息：

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发送击键是因为我想这样做，即使主机应用程序未处于活动状态

Gma.UserActivityMonitor中的钩子如下所示：

s_MouseDelegate = MouseHookProc;
s_MouseHookHandle = SetWindowsHookEx(
  WH_MOUSE_LL,
  s_MouseDelegate,
  Marshal.GetHINSTANCE(
    Assembly.GetExecutingAssembly().GetModules()[0]),
    0);

我使用Spy++监视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（请注意，WM_LBUTTONUP在处理完WM_CHAR后到达）：

---

我能看到的是，当其中一个发生时，它是随机的。如果我在发布消息之前加上延迟，它就会起作用。但是我不想使用延迟。

使用鼠标挂钩，在收到

WM*BUTTONUP

时发布消息

---

您看到这种行为的原因有很多（其他钩子、系统模态循环），但最明显的一个原因是，在WM_nBUTTONUP消息发布到线程之前，钩子会收到通知

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获得所需行为的唯一可靠方法是使用全局钩子，以便在获取消息的进程中执行。您可能需要使用WH_CALLWNDPROCRET hook，以便在处理消息后调用您的hook。

为什么不在此处发布相关代码，以便我们了解您是如何操作的？@Nawaz我添加了简化的代码，说明了我正在尝试做的事情和我所做的事情，但它只是有时起作用，不幸的是，你有比“有时”更好的标准吗？（例如，窗口需要处于活动状态，…）是否执行PostMessage？这些方法有失败的吗？用什么密码？ActiveControlInWindow是正确的窗口句柄吗？我能看到的是，当一个或另一个出现时，它是随机的。我已经编辑了这个问题，用spy++显示了结果。并且KEYUP和KEYDOWN会根据您的需要到达应用程序。所以这不可能有任何错误。

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