FindResource工作，LoadBitmap从磁盘的作品不，的LoadImage

问题描述

我想使用的从的。

我已经验证了资源的正确链接 - 检查与十六进制编辑器的最终EXE显示位图正确的包装里面的EXE

I've verified that the resource is linked correctly -- examining the final EXE with a hex editor shows that the bitmap is packed inside the EXE correctly.

我也验证了位图是有效的 - 使用的LoadImage与LR_LOADFROMFILE从在运行时加载磁盘位图工作正常，我看到它的时候出现我把它添加到一个GUI元素后

I've also verified that the bitmap is valid -- using LoadImage with LR_LOADFROMFILE to load the bitmap from disk at runtime works fine and I see it appear when I add it to a gui element later.

我已经验证了，我用它来访问资源的ID是有效的，以及 - 在FindResource函数查找资源和SizeofResource打印的确切字节数预计为位图

I've verified that the ID that I use to access the resource is valid as well -- the FindResource function finds the resource and SizeofResource prints the exact expected number of bytes for the bitmap.

所以我有一个有效的链接资源，有效身份证，以及一个可加载位图。

So I have a valid linked resource, a valid ID, and a loadable bitmap.

不过，LoadBitmap返回NULL也是如此的LoadImage，如果我从一个资源，而不是从磁盘加载。 GetLastError返回0。

However, LoadBitmap returns NULL and so does LoadImage if I load from a resource instead of from disk. GetLastError returns 0.

任何想法？难道我#defining RT_BITMAP在RESOURCE.RC是否正确？

Any ideas? Am I #defining RT_BITMAP in resource.rc correctly?

感谢。

RESOURCE.H

#define     BMP_TEST_ID         2

RESOURCE.RC

#include "resource.h" // defines BMP_TEST_ID
#define     RT_BITMAP           2 

BMP_TEST_ID RT_BITMAP "TEST24.BMP"

test.c以

#include <windows.h> // defines RT_BITMAP as MAKEINTRESOURCE(2)
#include "resource.h" // defines BMP_TEST_ID

HINSTANCE instance = GetModuleHandle(NULL);
if (!instance) { /* handle error */ }

/* find a bitmap resource with the ID we want -- OK! */
HRSRC rsc = FindResource(instance, RT_BITMAP, MAKEINTRESOURCE(BMP_TEST_ID));
if (!rsc) { /* handle error */ }

/* prints the exact size of the found resource -- GIVES CORRECT OUTPUT */
printf("SizeofResource: %d\n", (int) SizeofResource(instance, rsc));

// ***** THIS BIT DOESN'T WORK *****
/* load bitmap resource -- FAIL! */
HBITMAP bitmap = (HBITMAP)LoadBitmap(instance, MAKEINTRESOURCE(BMP_TEST_ID));
if (!bitmap) { /* handle error */ }

/* load bitmap from file -- OK! */
HBITMAP bitmap2 = (HBITMAP)LoadImage (NULL, "TEST24.BMP", IMAGE_BITMAP,0,0,LR_LOADFROMFILE);
if (!bitmap2) { /* handle error */ }

我的编译器是AMD64的mingw32msvc-GCC 4.6.3

My compiler is amd64-mingw32msvc-gcc 4.6.3

推荐答案

首先，你不应该定义 RT_BITMAP 可言。它是通过 WINUSER.H 要包含在你的c / cpp文件已定义。而事实证明，你不需要在你的资源文件反正。

First, you should not have to define RT_BITMAP at all. It is already defined through winuser.h to be included in your c/cpp files. And it turns out you don't need it in your resource file anyway.

的 BITMAP 资源类型将正确地分配你的位图文件正确的资源类型ID。更改您的位图资源的声明是：

The BITMAP resource type will properly assign the right resource type id for your bitmap file. Change your bitmap resource declaration to be:

BMP_TEST_ID BITMAP "TEST24.BMP" 

和你应该是好去。

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