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ShellExecute returns 'Not enough actual parameters' if using SW_SHOWNORMAL

Posted on 2009-05-10
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Last Modified: 2012-05-06
Using Delphi BDS 2006, I get 'Not enough actual parameters' when compiling a ShellExecute statement, but ONLY if I use SW_SHOWNORMAL. If I pass SW_SHOW I do not get any error.
Also if I try this in a new application I don't get any problem. only in my existing application.

Here's the code:
var
  param: string;
begin
  param := 'calc';
  shellapi.ShellExecute(GetDeskTopWindow
    , 'open'
    , pChar(Param)
    , nil
    , nil
    , SW_SHOWNORMAL);
end;

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Question by:rfwoolf
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7 Comments
 
LVL 13

Accepted Solution

by:
ThievingSix earned 213 total points
ID: 24350934
Thats weird, the only thing I can think of is try passing 1 instead of SW_SHOWNORMAL.
0
 
LVL 12

Assisted Solution

by:rionroc
rionroc earned 75 total points
ID: 24351414
uses ShellApi;
...
...

var
  param: string;
  h: Thandle;
begin
  h:=GetDeskTopWindow;
  param := 'calc';
  ShellExecute(h, 'open', pChar(Param), nil , nil , SW_SHOWNORMAL);
end;


Cheers!
0
 
LVL 38

Expert Comment

by:Geert Gruwez
ID: 24351564
you could have declared a same named function with more parameters ...

what shows when press Ctrl-Space at the end of the function ?
1 of more functions ?
0
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LVL 13

Author Comment

by:rfwoolf
ID: 24351632
ThievingSix: Oddly enough, using 1 compiles.
rionroc: Using GetDesktopWindow unfortunatley doesn't help
Geert_Gruwez: Do you mean in the last parameter, or do you mean for example after the last bracket ) but before the semi-colon ; ? I assume you mean the last parameter. Then yes it brings up a list of constants starting with SW_SHOWNORMAL = 1.

I guess I can live with putting 1 in.

I will keep the question open though in case somebody has anything new to add.

By the way, if I try to think of anything I did to make it like this I know I changed the compile settings to 'include debug dcus' 'local symbols' etc etc. But when I took all of these off the problem persists - also in a fresh applicaiton if I enable all the debug things it doesn't give a problem.
0
 
LVL 38

Expert Comment

by:Geert Gruwez
ID: 24351785
Hitting ctrl-space just after the function ShellExecute, before the (
This should bring up the list of available functions starting with that name...
0
 
LVL 38

Assisted Solution

by:Geert Gruwez
Geert Gruwez earned 212 total points
ID: 24351798
or add the windows unit name in front of the parameter SW_SHOWNORMAL

var
  param: string;
begin
  param := 'calc';
  shellapi.ShellExecute(GetDeskTopWindow
    , 'open'
    , pChar(Param)
    , nil
    , nil
    , windows.SW_SHOWNORMAL);
end;
0
 
LVL 13

Expert Comment

by:ThievingSix
ID: 24351899
Yeh that was my guess Geert. There might be another declaration of SW_SHOWNORMAL somewhere in that project.
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