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capturing up down keypresses in the combodropdown

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9726 Jan 7,2004 12:25 PM Jan 8,2004 11:46 AM Windows Forms 3
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Tags: Tools
Peter
Asked On January 7, 2004 12:25 PM

what is the proper way to catch up & down keypress for the combodropdown TIA, Peter

Administrator [Syncfusion]
Replied On January 7, 2004 02:55 PM

Hi Peter You will have to derive from ComboDropDown control and override the ProcessDialogKey in your derived control to catch the Up and Down keys. Regards Arun

Peter
Replied On January 7, 2004 04:50 PM

ProcessDialogKey is never called for directional keys

Administrator [Syncfusion]
Replied On January 8, 2004 11:46 AM

Hi Peter Yes, that seems to be the case. Sorry. You need to override ProcessCmdKey instead. Here is a derived ComboDropDown that does what you are looking for: public class MyComboDropDown : Syncfusion.Windows.Forms.Tools.ComboDropDown { protected override bool ProcessCmdKey(ref Message msg, Keys keyData) { if (keyData==Keys.Left ||keyData==Keys.Right || keyData==Keys.Up || keyData==Keys.Down) { MessageBox.Show("Arrow Key: " + keyData.ToString(),"MyComboDropDown"); } return base.ProcessCmdKey (ref msg, keyData); } } Regards Arun

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