Question

我一直在试用SDL 2，并收到SDL_Rect does not name a type错误... 代码：

#include <stdio.h>
#include <SDL.h>

using namespace std;


SDL_Window* gWindow = NULL;
SDL_Surface* gWSurface = NULL;
SDL_Surface* gFinalImage = NULL;
int screenW = 640;
int screenH = 480;

SDL_Rect stretchRect;
stretchRect.x = stretchRect.y = 0;
stretchRect.w = screenW;
stretchRect.h = screenH;

错误日志：

||=== Build: Debug in SDLEvents (compiler: GNU GCC Compiler) ===|
D:\My Works\SDL Stretching\TestingSDL.cpp|12|error: 'stretchRect' does not name a type|
D:\My Works\SDL Stretching\TestingSDL.cpp|13|error: 'stretchRect' does not name a type|
D:\My Works\SDL Stretching\TestingSDL.cpp|14|error: 'stretchRect' does not name a type|

我已经在网上和另一个问题进行了检查，但到目前为止尚无法解决问题.... 谢谢你们

Answer 1

如果我理解你正确显示的代码，你会尝试在任何函数之外的全局范围内初始化矩形。这样做不可能，你不能在函数之外使用赋值语句。

有两种解决方案：

在声明中初始化，如
```
SDL_Rect stretchRect = { values... };
```

在全局范围内声明变量，并在函数中初始化：

SDL_Rect stretchRect;

...

int main()
{
    stretchRect.x = stretchRect.y = 0;
    stretchRect.w = screenW;
    stretchRect.h = screenH;

    ...

SDL_rect不命名类型

1 个答案: