diff --git a/src/dlangui/core/events.d b/src/dlangui/core/events.d
index 0370e790..24db5132 100644
--- a/src/dlangui/core/events.d
+++ b/src/dlangui/core/events.d
@@ -25,11 +25,41 @@ enum MouseFlag : ushort {
 	XButton2= 0x0040
 }
 
+/// mouse button state details
+struct ButtondDetails {
+	/// Clock.currStdTime() for down event of this button (0 if button is up).
+	long  _downTs;
+	/// x coordinates of down event
+	short _downX;
+	/// y coordinates of down event
+	short _downY;
+	/// mouse button flags when down event occured
+	ushort _downFlags;
+	/// update for button down
+	void down(short x, short y, ushort flags) {
+		_downX = x;
+		_downY = y;
+		_downFlags = flags;
+		_downTs = std.datetime.Clock.currStdTime;
+	}
+	/// update for button up
+	void up() {
+		_downTs = 0;
+		_downX = 0;
+		_downY = 0;
+		_downFlags = 0;
+	}
+	@property bool isDown() { return downTs != 0; }
+}
+
 class MouseEvent {
 	protected MouseAction _action;
 	protected ushort _flags;
 	protected short _x;
 	protected short _y;
+	protected ButonDetails _lbutton;
+	protected ButonDetails _mbutton;
+	protected ButonDetails _rbutton;
 	@property MouseAction action() { return _action; }
 	@property ushort flags() { return _flags; }
 	@property short x() { return _x; }
diff --git a/src/dlangui/platforms/windows/winapp.d b/src/dlangui/platforms/windows/winapp.d
index 30cdeff0..b2006b7f 100644
--- a/src/dlangui/platforms/windows/winapp.d
+++ b/src/dlangui/platforms/windows/winapp.d
@@ -306,8 +306,17 @@ class Win32Window : Window {
         }
     }
 
+	protected ButonDetails _lbutton;
+	protected ButonDetails _mbutton;
+	protected ButonDetails _rbutton;
+
 	override bool onMouseEvent(MouseEvent event) {
+		return false;
+	}
+
+	bool onMouse(MouseEvent event) {
 		Log.d("MouseEvent ", event.action, " flags=", event.flags, " x=", event.x, " y=", event.y);
+		if (event.action == MouseAction.LButtonDown)
 		return true;
 	}
 }