# File vtk/gtk/GtkGLExtVTKRenderWindowInteractor.rb, line 162 def OnButtonDown(wid, event) ?? m = self.pointer ctrl, shift = _GetCtrlShift(event) @Iren.SetEventInformationFlipY(m[0], m[1], ctrl, shift, 0.chr, 0, nil) button = event.button if button == 3 @Iren.RightButtonPressEvent return true elsif button == 1 @Iren.LeftButtonPressEvent return true elsif button == 2 @Iren.MiddleButtonPressEvent return true else return ralse end end