opening file from external program

[polpero]

Hi

I have created a small Html help viewer (HViewer.exe)
I know how to call and open it with TProcess
but I can't find out how to have it open a specific file...

should I use the TProcess.parameters?

must HViewer.exe be explicitely instructed that it can open the sent files?

Thanks!

[typo]

Code: [Select]

OpenDocument(Filename :string).


[polpero]

nope...

I don't want the file to open in the default browser...
I want it to open in that HViewer.exe

[engkin]

must HViewer.exe be explicitely instructed that it can open the sent files?

Yes

[Bart]

How does your HViewer "know" which file to open?

Typically for such purposes a commandline parameter can be passed (see ParamCount/ParamStrUtf8() ).
If HViewer can handle that (commandline parameters), then you in your calling program you can add the filename to TProcess.Parameters.

Bart

[polpero]

Yes everything works fine now. Thanks for your hints and suggestions.
Here is how I figure it out.

The file is sent in the caller app:

  ...
  fName := filePath + '\filename.htm';
  AProcess := TProcess.Create(nil);
  AProcess.Executable:= 'HTMView.exe';
  //AProcess.CommandLine := 'HTMView.exe '+ fName ;
  AProcess.Parameters.Add(fName);
  ...

Then on HTMViewer.onShow I've got

  ...
  with application do
    //showMessage(intToStr(paramCount));
    if (paramCount > 0) then
      begin
       if fileExists( Params[1] ) then
           doLoadFile( pChar(params[1]));
       exit;
      end;
    ...

Thanks