Hi,

I have a window with a flowchart in one panel, and a user control in the other. On the edit boxes on the User Control, I have a leave event to validate the text entered. An invalid entry causes a message box to appear.

If I happen to click on the flowchart to trigger the above leave event, when I clear the MessageBox the flowChart seems to think I am holding the mouse down, and starts dragging across the flowchart.

Any idea what might be causing this?

Many thanks
Gerry

I tried the following:

this.flowChart1.Behavior = MindFusion.FlowChartX.EBehavior.bhDoNothing;
MessageBox.Show(exc.Message, "Invalid Value", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
this.flowChart1.Behavior = MindFusion.FlowChartX.EBehavior.bhModify;

but this didn't make any difference.

I then moved the last statement to the MouseUp event on the flowChart, but this has strange results. The change of the behaviour seems to work ok, but something fired by the MouseUp event then causes a null exception, which doesn't seem to be caused by any of my application events.

The Source of the exception states: "FlowChart.NET", and the StackTrace has the following:
"   at MindFusion.FlowChartX.FlowChart.OnMouseUp(MouseEventArgs e)\r\n   at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)\r\n   at System.Windows.Forms.Control.WndProc(Message& m)\r\n   at System.Windows.Forms.ControlNativeWindow.OnMessage(Message& m)\r\n   at System.Windows.Forms.ControlNativeWindow.WndProc(Message& m)\r\n   at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)\r\n   at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg)\r\n   at System.Windows.Forms.ComponentManager.System.Windows.Forms.UnsafeNativeMethods+I
MsoComponentManager.FPushMessageLoop(Int32 dwComponentID, Int32 reason, Int32 pvLoopData)\r\n   at System.Windows.Forms.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)\r\n   at System.Windows.Forms.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)\r\n   at System.Windows.Forms.Application.Run(Form mainForm)\r\n   at myApp.Forms.Form1.Main()"

Any help greatly appreciated

Thanks
Gerry