is a derivative of the standard MS Form, making a shadow is more like a general programming questions. That is why it is recommended to follow some of the already referred approaches in this thread.
The easiest way to achieve the shadow is to override the CreateParams
public partial class RadForm1 : Telerik.WinControls.UI.RadForm
protected override CreateParams CreateParams
const int CS_DROPSHADOW = 0x20000;
CreateParams cp = base.CreateParams;
cp.ClassStyle |= CS_DROPSHADOW;
I understand that you are using OpenEdge and Developer Studio, please note that for OpenEdge related topics the preferred places to submit a technical question are Salesforce and the Progress Community. Thus, the appropriate community and support engineers would gladly assist you to adopt the suggested solutions to ABL. You can log in to these websites straight from your Progress account: https://progresslink.progress.com/supportlink .
I hope this information helps.
Dess | Tech Support Engineer, Sr.
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