Question:
I’m using the Winexec command and trying to use a string as the argument, but Winexec takes only a Pchar as its argument. I can’t figure out how to put a regular string into a Pchar, or how to make a Pchar ‘point’ to a character string.
Answer:
WinAPI calls can be pretty confusing, huh? Let’s say you have a functioncalled WinAPICall that takes a PChar as an argument. Here are a couple ofways to make the call:First Method (This will only work for Delphi 2.0, which supports casting):
WinAPICall(PChar(MyStringVal));Second Method:
procedure CallWinApiCall(S : String);var Val : String; pVal : PChar;begin Val := S; {Initialize memory for the PChar} GetMem(pVal, Length(Val)); {Copy the contents of Val to PChar} pVal := StrPCopy(pVal, Val); WinAPICall(pVal); {This next step is ABSOLUTELY necessary} FreeMem(pVal, Length(Val));end;In any case, that should do it for you pretty nicely.