Hi,
For Halftone adjustment I used the GDI function -
HTUI_DeviceColorAdjustment
But during the time of linking I’m getting Error - unresolved external
symbol even though this function is defined in winddi.h and I have included
that header file in my file.
Is it because the proper library is not included while building a driver ?
But the other functions for Halftone (e.g. HT_ComputeRGBGammaTable
etc.)have worked for me .
unable to figure out the exact cause of the error.
Solution for this problem will be appreciated.
Thanks and Regards,
Prachi Bhargava
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Hi ,
For Halftone adjustment I used the GDI function -
HTUI_DeviceColorAdjustment
But during the time of linking I’m getting Error - unresolved external
symbol even though this function is defined in winddi.h and I have
included
that header file in my file.
Linking errors has nothing in common with .h files. .h files are used at
compilation
time, not in linking phase of your driver building.
Is it because the proper library is not included while building a driver ?
But the other functions for Halftone (e.g. HT_ComputeRGBGammaTable
etc.)have worked for me .
unable to figure out the exact cause of the error.
Usualy, functions are defined in .h files and implemented in library (or
DLL) files.
Your error occurs because you missed to include the appropiate .lib file for
your
function. Check out the libraries that you specified in to your linker
program. Be sure
that required .ib (or .dll) is there.
Pay attention to C++ decoration. If you’re developing your driver in C++ be
sure you’re
using “extern “C”” declaration modificator.
Good luck,
Daniel
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