How to delay a shell command in delphi? -

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i working delphi 2010 , shellapi. need little program building grows. here jest of application:

checks see if condition exists if said condition exists begins execute 2 shell commands dependent on previous 1 executing

   uses   shellapi;  procedure renamedir(dirfrom, dirto: string); var   shellinfo: tshfileopstruct; begin   shellinfo   begin     wnd    := 0;     wfunc  := fo_rename;     pfrom  := pchar(dirfrom);     pto    := pchar(dirto);     fflags := fof_filesonly or fof_allowundo or               fof_silent or fof_noconfirmation;   end;   shfileoperation(shellinfo); end;   procedure tform1.button1click(sender: tobject); begin   renamedir('c:\dir1', 'c:\dir2');    renamedir('c:\dir3', 'c:\dir');   end;

i novice @ delphi can see issue, second command executing before previous command completes. how solve issue first command executes , finishes before second 1 called?

update: added full pseudo code shows attempting do.

if command use external command/program, consider use createprocess() , passing infinite waitforsingleobject(). @ execandwait() example here.


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