Dear developers,

On Lazarus v0.9.25 r16541 i386-win32-win32/win64, the LoadLibrary function fails on WinCE.

I tried to load libpq.dll and sqlite3.dll with no success.

I have the ARM/WinCE libraries in the same directory as my executable (even in the \gdb folder). All accompanying libraries, *.dll and *.lib, for libpq.dll I have also there.

I tried to load the libraries myself using a full absolute path (e. g., ExtractFilePath(ParamStr(0)) + 'libpq.dll').

You can test it on the PQConnection component (try the .Connect property). Of course you should have the libpq.dll file for WinCE.

An alternative way is just to load some library you find on your WinCE system, let's say (untested code):

procedure Form1.Button1Click(Sender: TObject);
var LibHandle: HInst;
begin
    LibHandle := Windows.LoadLibrary('mylibrary.dll')
    ShowMessage(IntToStr(LibHandle));
    LibHandle := Windows.LoadLibrary(ExtractFilePath(ParamStr(0)) +
'mylibrary.dll')
    ShowMessage(IntToStr(LibHandle));
end;

That's it. If you have the same bug you'll get both handles of zero value (meaning the loading wasn't successful).

I wonder why just a simple thing as calling an API function would fail. Maybe because the core library from that the LoadLibrary function is imported also fails to load??

Any clue how to get it working?

Pavel ?ezn??ek

Op dinsdag 16-09-2008 om 21:16 uur [tijdzone +0200], schreef Pavel ?ezn??ek:

On Lazarus v0.9.25 r16541 i386-win32-win32/win64, the LoadLibrary function fails on WinCE.

Did you use fpc 2.2.2?

I tried to load libpq.dll and sqlite3.dll with no success.

sqlite3.dll works here as a charm. TSQLite3connection also works.

Did you try any other software that uses this library on WinCE?

I woudn't be suprised if all files must be in the application's directory.

Joost.

Joost van der Sluis napsal(a):

No, fpc 2.2.3 only.
Now I have reverted to v0.9.25 r15862 i386-win32-win32/win64 with fpc 2.2.3 but it works fine.

For me, neither.

Yes, an example program shipped with the libpq library works well.

Yes, WinCE is pretty strange, i. e. it does not support the "current directory" natively - as I read somewhere.
It's also strange that you had success loading the libraries, as well as me when I came back to an older snapshot. What's the difference between these two ones? If you figured out what exactly should I compare maybe I could send you a diff.

Pavel

Op donderdag 18-09-2008 om 23:47 uur [tijdzone +0200], schreef Pavel ?ezn??ek:

You gave the lazarus-revision number. But do you also know which fpc-revision number that is? Kan you give the fpc-revision which does work (the old one) and the one that doesn't?

Joost.

Joost van der Sluis napsal(a):

Hello Jost,

I'm very sorry but for this while I can give only some information that could guide you to the FPC revision numbers.

The new one was installed from this snapshot:
Lazarus-0.9.25-16541-fpc-2.2.3-20080911-win32.exe. WinCE: Lazarus-0.9.25-16541-fpc-2.2.3-20080911-cross-arm-wince-win32.exe. The old one and working is from this:
Lazarus-0.9.25-fpc-2.2.3-20080725-win32.exe.
WinCE: Lazarus-0.9.25-fpc-2.2.3-20080725-cross-arm-wince-win32.exe.

The older, working compiler I have recently installed says: Free Pascal Compiler version 2.2.3 [2008/07/25] for i386

Would this be sufficient? A second sorry: I didn't find on the wiki how to get the exact release number of FPC in time... neither from the command line help... Is there some other numbering than just the date?

Pavel