private void Hook_OnMouseActivity(object sender, CaptureMouseEventArgs e) { if (_captureState == CaptureState.Desktop_HotkeyPressedAwaitingMouseDown && (e.Button & MouseButtons.Left) != 0) { ShowCaptureForm(e.Location); } else if (_captureState == CaptureState.Touchpad_HotkeyPressed) { ShowCaptureForm(e.Location); _captureState = CaptureState.Touchpad_Dragging; _hook.SuppressLeftMouseDownOnce = true; } else if (_captureState == CaptureState.Touchpad_Dragging) { UpdateCaptureForm(e.Location); if (e.LeftButtonUp) { CommitCaptureForm(); _selectedWindowIndicator.Hide(); } } else if (_captureState == CaptureState.Desktop_MouseDownAwaitingMouseUp) { UpdateCaptureForm(e.Location); if (e.LeftButtonUp) { CommitCaptureForm(); } } }
/// <summary> /// A callback function which will be called every time a mouse activity detected. /// </summary> /// <param name="nCode"> /// [in] Specifies whether the hook procedure must process the message. /// If nCode is HC_ACTION, the hook procedure must process the message. /// If nCode is less than zero, the hook procedure must pass the message to the /// CallNextHookEx function without further processing and must return the /// value returned by CallNextHookEx. /// </param> /// <param name="wParam"> /// [in] Specifies whether the message was sent by the current thread. /// If the message was sent by the current thread, it is nonzero; otherwise, it is zero. /// </param> /// <param name="lParam"> /// [in] Pointer to a CWPSTRUCT structure that contains details about the message. /// </param> /// <returns> /// If nCode is less than zero, the hook procedure must return the value returned by CallNextHookEx. /// If nCode is greater than or equal to zero, it is highly recommended that you call CallNextHookEx /// and return the value it returns; otherwise, other applications that have installed WH_CALLWNDPROC /// hooks will not receive hook notifications and may behave incorrectly as a result. If the hook /// procedure does not call CallNextHookEx, the return value should be zero. /// </returns> private int MouseHookProc(int nCode, int wParam, IntPtr lParam) { bool leftButtonUp = false; bool suppressMouseThisTime = false; // if ok and someone listens to our events if ((nCode >= 0) && (OnMouseActivity != null)) { //Marshall the data from callback. MouseLLHookStruct mouseHookStruct = (MouseLLHookStruct)Marshal.PtrToStructure(lParam, typeof(MouseLLHookStruct)); //detect button clicked MouseButtons button = MouseButtons.None; short mouseDelta = 0; switch (wParam) { case WM_LBUTTONDOWN: //case WM_LBUTTONDBLCLK: button = MouseButtons.Left; if (SuppressLeftMouseDownOnce) { suppressMouseThisTime = true; SuppressLeftMouseDownOnce = false; } break; case WM_LBUTTONUP: leftButtonUp = true; break; case WM_RBUTTONDOWN: case WM_RBUTTONUP: //case WM_RBUTTONDBLCLK: button = MouseButtons.Right; break; case WM_MOUSEWHEEL: //If the message is WM_MOUSEWHEEL, the high-order word of mouseData member is the wheel delta. //One wheel click is defined as WHEEL_DELTA, which is 120. //(value >> 16) & 0xffff; retrieves the high-order word from the given 32-bit value mouseDelta = (short)((mouseHookStruct.mouseData >> 16) & 0xffff); //TODO: X BUTTONS (I havent them so was unable to test) //If the message is WM_XBUTTONDOWN, WM_XBUTTONUP, WM_XBUTTONDBLCLK, WM_NCXBUTTONDOWN, WM_NCXBUTTONUP, //or WM_NCXBUTTONDBLCLK, the high-order word specifies which X button was pressed or released, //and the low-order word is reserved. This value can be one or more of the following values. //Otherwise, mouseData is not used. break; } //double clicks int clickCount = 0; if (button != MouseButtons.None) { if (wParam == WM_LBUTTONDBLCLK || wParam == WM_RBUTTONDBLCLK) { clickCount = 2; } else { clickCount = 1; } } //generate event var e = new CaptureMouseEventArgs( button, clickCount, mouseHookStruct.pt.x, mouseHookStruct.pt.y, mouseDelta, leftButtonUp ); //raise it OnMouseActivity(this, e); } if (suppressMouseThisTime) { return(1); } else { //call next hook return(CallNextHookEx(hMouseHook, nCode, wParam, lParam)); } }