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Messages 1 to 5 of 5 total |
KeyDown event hangs on ENTER key |
Thu, May 29 2014 3:34 PM | Permanent Link |
Sergei Safar | Hi,
please, try this: New Visual Project Drop a TEdit Drop a TButton and write something on Button1Click event like: ShowMessage('Hello'); Write on Edit1KeyDown event: begin Result := true; if (Key = 13) then begin Button1Click(nil); Result := false; end; end; Run the app (F9) Click inside Edit1 and press ENTER: Nothing happens or sometimes the IDE hangs. Other Key values like 8 (backspace) or 9 (TAB) works perfectly. - Sergei Safar |
Thu, May 29 2014 5:14 PM | Permanent Link |
Walter Matte Tactical Business Corporation | Did you set: Form1.KeyPreview := True; // this must be set to True I don't see it hanging... works as expected. Walter |
Fri, May 30 2014 3:10 AM | Permanent Link |
Matthew Jones | Sergei Safar wrote:
> Nothing happens or sometimes the IDE hangs. Other Key values like 8 Most likely this is an infinite loop. Check you haven't put it in the buttonclick routine too. -- Matthew Jones |
Fri, May 30 2014 6:44 AM | Permanent Link |
Uli Becker | Sergei,
> Nothing happens or sometimes the IDE hangs. Other Key values like 8 (backspace) or 9 (TAB) works perfectly. There were some discussions of similar issues. Have a look here e.g.: http://tinyurl.com/kdtskr9 Uli |
Fri, May 30 2014 9:27 AM | Permanent Link |
Sergei Safar | Walter,
>>Form1.KeyPreview := True; // this must be set to True KeyPreview = true solved the problem. Thank you all for the replies Example here: http://www.shs.eng.br/test/project23.html -- Sergei Safar |
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