I have a mfc application where classic looking messagebox are used all over. I want to replace them with CTaskDialog. first I added afxtaskdialog.h but got error of _UNICODE not defined . When I put #define _UNICODE in the header file of the .cpp , some errors about unresolved externals are showing up. What am I missing or doing wrong ?
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Don't define _UNICODE in the header files.
Please set the project settings General -> Character Set -> Use Unicode character Set!

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