Revert "fix checks for key down & up"

This reverts commit 5931b1476b.

Pilz.UI/PaintingControl/PaintingControl.vb

@@ -129,16 +129,10 @@ Public Class PaintingControl
         Refresh()
     End Sub
 
-    Private Sub CheckKeyDown(sender As Object, e As KeyEventArgs) Handles Me.KeyDown
-        If e.Shift Then pressedShift = True
-        If e.Control Then pressedControl = True
-        If e.Alt Then pressedAlt = True
-    End Sub
-
-    Private Sub CheckKeyUp(sender As Object, e As KeyEventArgs) Handles Me.KeyUp
-        If e.Shift Then pressedShift = False
-        If e.Control Then pressedControl = False
-        If e.Alt Then pressedAlt = False
+    Private Sub CheckKeyDown(sender As Object, e As KeyEventArgs) Handles Me.KeyDown, Me.KeyUp
+        pressedShift = e.Shift
+        pressedControl = e.Control
+        pressedAlt = e.Alt
     End Sub
 
     Friend ReadOnly Property AreaSelectionRectangle As RectangleF