Required Library of Imapi2 for Qt with mingw compiler on windows

Harish Chikkaraju

I was trying to integrate IMAPI2 sources to my qt project , i was getting following linking error.

error: undefined reference to `IID_IDiscMaster2'

error: undefined reference to `_GUID const& __mingw_uuidof()'

All these linker errors are thrown while calling cocreateinstance function which is included from combaseapi.h(linked from mingw path)

I assume it is something to be a linking error , as i am working on Qt with mingw compiler i am unable to find respective lib file or .a file for this combaseapi.h in qt compiler path.

I tried adding windows imapi2.dll but it showing file not recognized error while running qmake

jsulm

@Harish-Chikkaraju "I was trying to integrate IMAPI2 sources to my qt project " - this is not clear to me. Do you add source code of that library to your project? Or do you use a precompiled version (dll/lib)?

"I tried adding windows imapi2.dll but it showing file not recognized error while running qmake" - please show your pro file.

Harish Chikkaraju

@jsulm I added header and cpp files to the current Qt Project . and in following way i have added dll to pro
LIBS+ = ./Libs/imapi2.dll

after adding dll in this way i am getting below error.

C:\Sample\Libs\imapi2.dll:-1: error: file not recognized: File format not recognized

jsulm

@Harish-Chikkaraju If you add the library source code there is no need to add the dll. You either do the one or the other, not both.
"C:\Sample\Libs\imapi2.dll:-1: error: file not recognized: File format not recognized" - most probably the lib was compiled using different compiler than the one you're using. On Windows you can't mix different compilers.

Harish Chikkaraju

@jsulm yes the imapi2 dll was compiled using msvc compiler which i got from windows sdk.

I am unable to find the respective lib or .a file for the imapi2 package.

jsulm

@Harish-Chikkaraju You should first decide whether you want:

Directly add IMAP2 source code to your project
Use precompiled version of that library

You also can compile first IMAP2 library using your compiler and then add it to your project.

aha_1980

@Harish-Chikkaraju said in Required Library of Imapi2 for Qt with mingw compiler on windows:

I am unable to find the respective lib or .a file for the imapi2 package.

Then you can try to create your own import library: http://www.mingw.org/wiki/CreateImportLibraries

Another way would still be to load the library dynamically with QLibrary and to resolve the symbols at runtime. That way you are completely compiler independent.

Regards

Harish Chikkaraju

@jsulm said in Required Library of Imapi2 for Qt with mingw compiler on windows:

Use precompiled version of that lib

I have only added wrapper classes and headers to use the API's like CoCreateInstance function to create a instances of IDiscMaster2, IDiscFormat2Data from imapi2 package , i dont have complete source package of imapi2.

jsulm

@Harish-Chikkaraju Then you have to possibilities:

Find a binary of that library built using MinGW
Build this library by yourself using your MinGW compiler

Harish Chikkaraju

@jsulm

Find a binary of that library built using MinGW - I have an build exe in visual studio with msvc compiler with said wrapper files.

Build this library by yourself using your MinGW compiler - Could you suggest a way to do ?

jsulm

@Harish-Chikkaraju said in Required Library of Imapi2 for Qt with mingw compiler on windows:

Could you suggest a way to do

You should check the documentation of that library. Usually there is a description how to build the project.