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How to use Virtual Keys in Form?

How to use Virtual Keys in Form?

How to use Virtual Keys in Form?

I sent my Sample Project list_select.zip to show clearly what I made.

This contains 2 Executables ".exe":
-"test1.exe" is the Original Project
-"test2.exe" is the Same with the left ListBox disabled (which I don't want to disable it)

The "OnKeyDown" Event in "test2" worked fine, then in "test1" doesn't work.
I already tried "Form1.SetFocus;", but this does nothing for "OnKeyDown" Event.

Please can Someone know what is the Problem with "test1" Sample?

I use "Borland Delphi 7".

RE: How to use Virtual Keys in Form?

I'm not sure we'll want to download and run executables. If they are small projects then post the code along with the dfm files.

RE: How to use Virtual Keys in Form?

Well... sorry for the last Download Link. I sent an Attachment to make it easier (only the Source).

It's just a Test to show the common Problem which this happened often.
I want to tell what is the General Tip to know to use between the "OnKeyDown" in "Form1" with a ListBox enabled (only when disabled it, this strangely worked).

Must I use the Focus Function? Or another One?...

RE: How to use Virtual Keys in Form?

You're using the Form's KeyDown event. You need to set the form's KeyPreview property to True (from Object inspector when the form is the "selected" component or via code say in the FormCreate event - "KeyPreview := True")

RE: How to use Virtual Keys in Form?

Thank you very much! Just did "KeyPreview" as True, then this works perfectly! thumbsup2

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