Hi there,

I've tried to CustomDraw an Item in the ResourceView completely. What I want is full control over the Item's visible area. By drawing a filled rectangle over the bounds this should be easily achieved. But some parts of the ItemMoveBand are drawn later and so I cannot draw a complete custom representation of the item. For my custom items the move band is not needed, but for the other items on the ResourceView.

A very good way to improve the custom drawing features in general would perhaps be an event that is fired before the internal drawing is performed. Setting a cancel flag in this event could help saving resources for unneeded drawing and create more freedom for custom drawings.

The yellow item in the screenshot is created by custom drawing the bounding rectangle just like this:

            calendar.CustomDraw |= CustomDrawElements.ResourceViewItem;
            calendar.Draw += delegate(object sender, DrawEventArgs args)
                {
                    if (args.Item is InfoItem)
                    {
                        args.Graphics.FillRectangle(Brushes.Gold, args.Bounds);
                    }
                };
 

Thanks for any help
Achim

Hi Meppy,

thank you for the fast response - I'm very impressed!

I've tried out the new version and it works for my case. But I have still seen some issues that might be interesting for you. I've used the following code to test it (the CustomDraw flags for ResourceViewItem and ItemMoveBand are set properly):

        private void calendar1_ItemDrawing(object sender, DrawEventArgs e)
        {
            if (e.Element == CustomDrawElements.ResourceViewItem)
            {
                e.Handled = true;
                e.Graphics.FillRectangle(Brushes.Gold, e.Bounds);
            }

            if (e.Element == CustomDrawElements.ItemMoveBand)
            {
                e.Handled = true;
            }
        }
 

The first if-block draws the complete item with custom code - except the shadow of the item. When I remove the drawing code and just set e.Handled to true, a shadow for the item is left on the chart. Maybe the drawing of the shadows should also be piped through the custom drawing engine.

The second if-block never gets fired. Even when the first block is not executed (in fact I first tried the new event only having the second block implemented). It would be more intuitive firing the ItemDrawing event for the same elements as the Draw event. This way it becomes possible to just cancel the drawing for e.g. the ItemMoveBand and let the other things as they are.

Regards
Achim

Hi Meppy,

thanks a lot - now I am satisfied

Best regards
Achim