Cannot load user32.dll from extern C file

[been_1990]

Ok, I just saw I get some warnings:

E:/QT Projects/rawInput-build-desktop/../rawInput/raw_mouse.c:154: warning: passing argument 1 of 'LoadLibraryW' from incompatible pointer type
c:\qt\2010.05\mingw\bin\../lib/gcc/mingw32/4.4.0/../../../../include/winbase.h:1727: expected 'LPCWSTR' but argument is of type 'char *'

E:/QT Projects/rawInput-build-desktop/../rawInput/raw_mouse.c:154: warning: passing argument 1 of 'LoadLibraryW' from incompatible pointer type
c:\qt\2010.05\mingw\bin\../lib/gcc/mingw32/4.4.0/../../../../include/winbase.h:1727: expected 'LPCWSTR' but argument is of type 'char *'

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PS: Im trying to use GetLastError, but Im getting some problems fromQtCreator, so it will take a while.

[Timoteo]

That's probably why. You have unicode defined, but the source (raw_mouse.cpp) is using ANSI. I'm guessing that LoadLibrary has been failing all along with "no such file or directory". To continue as you are, you need to set your project up to use single-byte characters or you can patch raw_mouse.cpp to use the _TEXT() macro around the string literals. (e.g. _TEXT("user32.dll")).

Edit: After looking at it again, I can see that "char" is used too extensively to bother making it unicode compliant. Unless you have a compelling reason otherwise, you would be better served to just use ANSI encoding.

[been_1990]

How do I set the rest of my application to ANSI?

Edit:
GetLastError() outputs '5716627'.

[squidge]

5716627 doesn't sound like a valid error code, how do you get that?

[wysota]

Sorry to cut into the discussion but wouldn't it be simpler to rewrite this init_raw_mouse function to do the following instead of the "LoadLibrary" part?

_RRID = RegisterRawInputDevices;
if (!_RRID) return 2;
_GRIDL = GetRawInputDeviceList;
if (!_GRIDL) return 3;
_GRIDIA = GetRawInputDeviceInfoA;
if (!_GRIDIA) return 33;
_GRID = GetRawInputData;
if (!_GRID) return 4;

_RRID = RegisterRawInputDevices;
if (!_RRID) return 2;
_GRIDL = GetRawInputDeviceList;
if (!_GRIDL) return 3;
_GRIDIA = GetRawInputDeviceInfoA;
if (!_GRIDIA) return 33;
_GRID = GetRawInputData;
if (!_GRID) return 4;

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The rest of the code could stay the same.

[been_1990]

Yeah... Wise Wysota made it Work... Thanks! That solves the problem . Thanks to Timoteo and Squidge for helping.