_WIN64 未在 x64 项目中定义 [英] _WIN64 is not defined in x64 project

问题描述

我使用的是 VS2008 并且项目属性设置为(活动)x64

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

奇怪的是 _WIN64 没有定义，WPARAM 和 LPARAM 仍然是 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，我应该把#define _WIN64 放在哪里?预处理器设置似乎不起作用.

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，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 已由编译器定义，但 IDE 无法识别.(在 VS2010 中似乎已修复.)

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

sizeof(WPARAM) 和 sizeof(LPARAM) 的值都是 8(不是 4)

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

IDE 以灰色显示 *ifdef _WIN64* 块中的代码，就好像它们处于非活动状态一样，而实际上不是.

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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