How to program a pure 64-bit application with cvi 2009?
Hello,
I am confused by the menu options, from the menu of Build>>Configuration, it can specify the X64 option that seems it can generate a 64-bit program, but from the menu of Options>>Build options..., the default call convention not has the option of __fastcall. I am not sure if just specify the Build>>Configuration to X64, that the generating code is a pure 64-bit?
David
David,
The calling convention setting in the Build Options dialog only applies to 32-bit builds. That's why it has "(32-bit)" in the name. The reason __fastcall isn't shown in the Build Options dialog is because there is nothing to choose -- that is the only calling convention that can be used with 64-bit builds.
As for size_t (and ssize_t), I think you might be misunderstanding that portion of the help topic. You do not have to (nor should you) change all your integers to size_t. As Wolfgang mentioned earlier, you should only change the types of integers which might hold 64-bit values in the 64-bit version of your application. The return value of a callback is not an example of something that would ever hold a 64-bit value, so it was not changed to size_t.
Luis
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