Using WIN32 APi function "GetVolumeNameForVolumeMountPointA"

[klenze]

Hi,

I want to use the win 32 API function GetVolumeNameForVolumeMountPointA in my qt application, but I get this compilation error:

error: 'GetVolumeNameForVolumeMountPointA' was not declared in this scope

error: 'GetVolumeNameForVolumeMountPointA' was not declared in this scope

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WinBase.h and Windows.h are included both. What might be the problem?

Thanks

[wysota]

How is this question related to Qt?

[klenze]

Sorry, because of the vaque description of my problem.
I just want to know if it is principally possible to use WIN32 Api functions in Qt applications? Are there any restrictions regarding the used compiler ?

[Lesiok]

Qt application is normal C++ application so You can do this.

[klenze]

Can I also use it with the gcc compiler, which is available in qtCreator?

[wysota]

Why wouldn't it be possible? And yes, you can write your code in any code editor you like and you can be wearing a Linux t-shirt while writing Windows code, your Windows shouldn't explode in your face because of that.

[ChrisW67]

GetVolumeNameForVolumeMountPointA is defined in winbase.h only on Windows 2003, XP or later. According to the comment in MinGW's windows.h:

#ifndef WINVER
#define WINVER 0x0400
/*
 * If you need Win32 API features newer the Win95 and WinNT then you must
 * define WINVER before including windows.h or any other method of including
 * the windef.h header.
 */
#endif

#ifndef WINVER
#define WINVER 0x0400
/*
 * If you need Win32 API features newer the Win95 and WinNT then you must
 * define WINVER before including windows.h or any other method of including
 * the windef.h header.
 */
#endif

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Values are documented here: http://msdn.microsoft.com/en-us/libr...=vs.85%29.aspx
Try:

#define WINVER 0x0501
#include <windows.h>

#define WINVER 0x0501
#include <windows.h>

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or put:

DEFINES += WINVER=0x0501

DEFINES += WINVER=0x0501

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in your PRO file for a project-wide setting

[klenze]

Great, it works.

Thanks a lot.