在x64项目中未定义_WIN64 [英] _WIN64 is not defined in x64 project

问题描述

我正在使用VS2008，并且将项目属性设置为（活动）x64

I'm using VS2008 and the project properties are set for (active) x64

奇怪的是未定义_WIN64且WPARAM和LPARAM仍为32位。

and the weird thing is _WIN64 is not defined and WPARAM and LPARAM are still 32-bit.

我应该手动定义_WIN64吗？

Should I define _WIN64 manually?

如果是这样，我应该在哪里#define _WIN64？

If so, where should I put #define _WIN64? Preprocessor setting doesn't seem to work.

我很确定它被编译为x64，因为在任务管理器中该exe没有* 32后缀。

I'm quite certain it's compiled as x64 because in task manager the exe has no *32 postfix.

推荐答案

问题是，

_WIN64已经由编译器定义，但IDE无法认不出来。 （似乎已在VS2010中修复。）

_WIN64 is already defined by compiler but the IDE couldn't recognize it. (seemed fixed in VS2010.)

sizeof（WPARAM）和sizeof（LPARAM）的值均为8（而不是4）

The values of sizeof(WPARAM) and sizeof(LPARAM) are both 8 (not 4)

IDE在* ifdef _WIN64 *块中以灰色显示代码，就好像它们处于非活动状态一样。

The IDE shows codes in *ifdef _WIN64* block in grey color as if they were inactive, which are not.

http://bugs.python.org/issue1558

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