Typical errors of porting C++ code on the 64-bit platform

The use of outdated functions and predefined constants

While developing a 64-bit application, be sure to bear in mind the changes of the environment in which it will be performed. Some functions will become outdated and it will be necessary to replace them with some variants. GetWindowLong is a good example of such function in the Windows operation system. Pay your attention to the constants referring to the interaction with the environment in which the program is functioning. In Windows the lines containing "system32" or "Program Files" will be suspect.

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