Project JEDI - Issue Tracker - JEDI VCL
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4560 00 JVCL Components major always 2008-10-31 12:00 2008-11-01 14:44
Prozac Windows  
AHUser Vista  
normal Utlimate  
resolved Daily / GIT  
fixed  
none    
none 3.36  
0004560: JclAppInst - incorrect CMD strings
Hi!

Today I've downloaded the latest revision of JclAppInst.pas 2523 since the one included in official JCL 3110 caused serious exceptions.
JclAppInst.pas 2523 seems to work fine except parsing command line params.
Command line parameters are incorrectly received.
There are probably some string encoding problems. The strings are incomplete and sometimes contain strange chcracters.
In my application I always pass input file paths as a command line parameters so the issue is in this case really serious and that's why I decided to report it here.
Try to use the following:
procedure TMain_Form.JvAppInstances1CmdLineReceived(Sender: TObject; CmdLine: TStrings);
begin
  if CmdLine.Count > 0 then
  ShowMessage(CmdLine[0]);
end;
zip file icon JvAppInstances_CMD.zip [^] (269,087 bytes) 2008-11-01 03:40
Issue History
2008-10-31 12:00 Prozac New Issue
2008-10-31 12:09 jfudickar Note Added: 0014936
2008-11-01 03:40 Prozac Note Added: 0014938
2008-11-01 03:40 Prozac File Added: JvAppInstances_CMD.zip
2008-11-01 03:41 Prozac Issue Monitored: Prozac
2008-11-01 14:43 AHUser Status new => resolved
2008-11-01 14:43 AHUser Fixed in Version => Daily / SVN
2008-11-01 14:43 AHUser Resolution open => fixed
2008-11-01 14:43 AHUser Assigned To => AHUser
2008-11-01 14:43 AHUser Note Added: 0014941

Notes
(0014936)
jfudickar   
2008-10-31 12:09   
Please create a small sample for this.
(0014938)
Prozac   
2008-11-01 03:40   
Hi jfudickar and thanks for your response.
Here is my sample uploaded.

How to use:
- Run JvAppInstances_CMD.exe (and do not close this instance).
- Open CMD and navigate to JvAppInstances_CMD directory.
- Run another instance of the executable via CMD with one long parameter, i.e.:
JvAppInstances_CMD.exe "This is my cmd parameter as a sample for this jcl control"
(0014941)
AHUser   
2008-11-01 14:43   
Fixed in JCL SVN.

The WM_COPYDATA parameter cbData was used as "Length" for strings. But Windows doesn't know that we transfer UTF16 strings and only allocates "cbData" Bytes. This caused a truncation of the strings.