提供unsigned int时，LoadImage会失败，但适用于#define [英] LoadImage fails when supplied unsigned int but works for #define

问题描述

给出如下这样的一行：

Given a line like this:

bitmapHandle = (HBITMAP) ::LoadImage(app->instance(),
            MAKEINTRESOURCE(resourceID), IMAGE_BITMAP, 0, 0,
            LR_DEFAULTSIZE|LR_CREATEDIBSECTION);

如果 resourceID LoadImage 会失败>最终不是 #defined？换句话说，如果标题定义文件定义传递给函数的值为 #define THE_RESOURCE 103 ，然后它可以工作，即使它作为 DWORD 或 unsigned int 在整个调用者中传递。但是，如果我将资源文件中的定义更改为 const WORD THE_RESOURCE = 103 ，或者是unsigned int或其他类型，则 LoadImage 失败了？



我几分钟后对着它头撞了一下，我比什么都好奇。据我所知， MAKEINTRESOURCE 正在使用相同的确切数字进行魔术，这是工作版和非工作版中唯一不同的项。



谢谢！

Why would the LoadImage fail if the resourceID is not ultimately #defined? In other words, if the header definition file defines the value passed into the function as #define THE_RESOURCE 103, then it works, even if it is passed throughout the callers as a DWORD or unsigned int. But if I change the definition in the resource file to const WORD THE_RESOURCE = 103, or an unsigned int, or another type, the LoadImage fails?

I'm curious more than anything, after butting my head against it for a couple minutes. As far as I can see, MAKEINTRESOURCE is doing its magic on the same exact number, and that is the only item that is different in the working and non-working version.

Thanks!

推荐答案

程序文件中的所有资源都可以通过名称访问（作为字符串）或者整数值。如果任何名称都没有 #define 语句，则资源编译器会将该名称存储在资源部分中。如果您尝试通过数字（由C ++ const int 语句定义）引用该项目，系统将找不到匹配项。



您可以在 http://msdn2.microsoft找到有关资源文件的更多信息。 .com / zh-CN / library / aa380599.aspx [ ^ ]。

All resources in a program file are accessed by their name (as a string) or by an integer value. If there is no #define statement for any name, then the resource compiler will store the name in the resource section. If you then try to refer to that item by a number (defined by a C++ const int statement) the system will not find a match.

You can find more information on Resource Files at http://msdn2.microsoft.com/en-us/library/aa380599.aspx[^].

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