Hello
I get strange results form GetLasError in WinCe;
something like 1449435930, for example;
I use this:
{$include d:\lazarus\fpc\2.2.4\source\rtl\wince\wininc\coredll.inc}
function GetLastError:DWORD; external KernelDLL name 'GetLastError';
var
 err: dword;
begin
    MutexHandle := CreateMutex(NIL, TRUE, 'xxx');
    err:= GetCeError;
    if err = ERROR_ALREADY_EXISTS  THEN BEGIN
      SetForegroundWindow(FindWindow('xxx', ''));
      CloseHandle(MutexHandle);
      Application.BringToFront;
    END ELSE BEGIN
      .........
Am I missing something?
Why do I get those huge values from GetLastError?
Thanks for any help

Is this the wrong forum?

Can anybody help with my question? If I should send it to another forum, please
tell me which one.
Thanks

Hi!

1. why do you use "{$include ...}"? Just add the unit "windows" to the uses clause of your program - if it isn't already

2. why do you redeclare "GetLastError" when you're already including the file which contains the import? (but the first point is more important)

3. why are you using "GetCeError" while you want to use "GetLastError"? ("GetLastError" is the correct one in this context by the way)

4. you can't use the "Get*Error" methods like this. You first have to check whether the result of "CreateMutex" is valid (e. g. check if it is "0" or "INVALID_HANDLE_VALUE" - I don't know which one is used here... please check the MSDN for this bit of info ;) ). If the check is not valid (e.g. "MutexHandle" is "0"/"INVALID_HANDLE_VALUE") THEN you can use "Get*Error".

I hope I was able to help you.

Regards,
Sven