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Starting Other Applications

d4jaj1
d4jaj1 asked
on
Medium Priority
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Last Modified: 2010-04-06
I can't beleive this is so complicated in Delphi.  I simply want to start another application, not necesarily for OLE or DDE puposes.  In Paradox, I simply put 'Execute.notepad.exe' in a button - and it happened.  I tried CreateProcess and WinExec and neither work.  Can someone write so CODE telling me how to execute an .exe file.  

I'll assume your code will search the existing directory for the .exe, then the PATH, then the entire drive.  If this is not the case, please let me know what the code is to do this.
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Commented:
It's not harder to do than this:
(You just have to tell the system how the application's
supposed to be shown)

WinExec('notepad.exe', SW_SHOWNORMAL);

...OR...

uses ShellAPI;
   .
   .
   .
ShellExecute(Handle, 'open', 'notepad.exe', '', '', SW_SHOWNORMAL);

/// John

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Commented:
Thanks, it works great!  I'm going to rate you Excellent on this, but I wanted to make sure this would search teh current directory, then windows directory, or all drives on the user's system?  

The reason I'm asking is the user will be able to install some files where ever thhey want, thus my program would need to search for it.

Author

Commented:
I'll assume either you didn't have time or didn't know teh answer to my clairification answer.

Commented:
Sorry, I didn't realize that it was a question.
These methods scan directories like this (taken from the help file):

1.      The directory from which the application loaded.
2.      The current directory.
3.      The Windows system directory. The GetSystemDirectory function retrieves the path of this directory.
4.      The Windows directory. The GetWindowsDirectory function retrieves the path of this directory.
5.      The directories listed in the PATH environment variable.

If you need to scan any arbitrary directory, you have to scan
that yourself, preferrably with a recursive function using
"FindFirst/Next/Close". But if you do; ask a formal question
so that the experts here get some more points. :-)

/// John

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