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| private int MouseHookProc(int nCode, int wParam, IntPtr lParam)
{
// 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_LBUTTONUP:
//case WM_LBUTTONDBLCLK:
button = MouseButtons.Left;
break;
case WM_RBUTTONDOWN:
//case WM_RBUTTONUP:
//case WM_RBUTTONDBLCLK:
button = MouseButtons.Right;
break;
case WM_MBUTTONDOWN:
//case WM_RBUTTONUP:
//case WM_RBUTTONDBLCLK:
button = MouseButtons.Middle;
break;
case WM_MBUTTONUP:
// Je ne sais pas...
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
MouseEventArgs e = new MouseEventArgs(
button,
clickCount,
mouseHookStruct.pt.x,
mouseHookStruct.pt.y,
mouseDelta);
//raise it
OnMouseActivity(this, e);
}
//call next hook
return CallNextHookEx(hMouseHook, nCode, wParam, lParam);
} |
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