Question

我第一次尝试使用例外但即使这是一个非常简单的例子我只是无法让它编译，我看了在几个例子中并尝试编码许多不同的方式但我还是不确定到底在哪里问题是因为我得名字当我介绍catch / try / throw时这是我的代码，希望它是一些东西真的很愚蠢：）

#include "Surface.h"
#include "SDL_Image.h"

using namespace std;

SDL_Surface* surface::Load(string fileName){

   SDL_Surface* loadedSurface = IMG_Load(fileName.c_str());
   if(loadedSurface == 0) throw 0;

   //Convert surface to same format as display
   loadedSurface = SDL_DisplayFormatAlpha(loadedSurface);

   return loadedSurface;
}

#include "GameState.h"
#include "Surface.h"

#include<iostream>

using namespace std;

GameState::GameState(string fileName){

   try{
      stateWallpaper_ = surface::Load(fileName);
   }
   catch(int& e){
      cerr << "Could not load " << fileName << endl;
   }
}

提前感谢您的帮助！

编辑：抱歉，我忘了发布错误消息：它是

In function `ZN14GameStateIntroC1Ev':|
-undefined reference to `__gxx_personality_sj0'|
-undefined reference to `_Unwind_SjLj_Register'|
-undefined reference to `_Unwind_SjLj_Unregister'|
In function `ZN14GameStateIntroC1Ev':|
undefined reference to `_Unwind_SjLj_Resume'|
In function `ZN14GameStateIntroC2Ev':|
-undefined reference to `__gxx_personality_sj0'|
-undefined reference to `_Unwind_SjLj_Register'|
-undefined reference to `_Unwind_SjLj_Unregister'|
obj\Release\GameStateIntro.o||In function `ZN14GameStateIntroC2Ev':|
C:\Program Files (x86)\CodeBlocks\MinGW\bin\..\lib\gcc\mingw32\3.4.5\..\..\..\..\include\c++\3.4.5\ext\new_allocator.h|69|undefined reference to `_Unwind_SjLj_Resume'|
C:\MinGW\lib\libSDLmain.a(SDL_win32_main.o)||In function `redirect_output':|
\Users\slouken\release\SDL\SDL-1.2.15\.\src\main\win32\SDL_win32_main.c|219|undefined reference to `SDL_strlcpy'|
\Users\slouken\release\SDL\SDL-1.2.15\.\src\main\win32\SDL_win32_main.c|220|undefined reference to `SDL_strlcat'|
\Users\slouken\release\SDL\SDL-1.2.15\.\src\main\win32\SDL_win32_main.c|243|undefined reference to `SDL_strlcpy'|
\Users\slouken\release\SDL\SDL-1.2.15\.\src\main\win32\SDL_win32_main.c|244|undefined reference to `SDL_strlcat'|
C:\MinGW\lib\libSDLmain.a(SDL_win32_main.o)||In function `console_main':|
\Users\slouken\release\SDL\SDL-1.2.15\.\src\main\win32\SDL_win32_main.c|296|undefined reference to `SDL_strlcpy'|
\Users\slouken\release\SDL\SDL-1.2.15\.\src\main\win32\SDL_win32_main.c|301|undefined reference to `SDL_GetError'|
\Users\slouken\release\SDL\SDL-1.2.15\.\src\main\win32\SDL_win32_main.c|312|undefined reference to `SDL_SetModuleHandle'|
C:\MinGW\lib\libSDLmain.a(SDL_win32_main.o)||In function `WinMain@16':|
\Users\slouken\release\SDL\SDL-1.2.15\.\src\main\win32\SDL_win32_main.c|354|undefined reference to `SDL_getenv'|
\Users\slouken\release\SDL\SDL-1.2.15\.\src\main\win32\SDL_win32_main.c|386|undefined reference to `SDL_strlcpy'|
C:\MinGW\lib\libSDLmain.a(SDL_win32_main.o)||In function `cleanup':|
\Users\slouken\release\SDL\SDL-1.2.15\.\src\main\win32\SDL_win32_main.c|158|undefined reference to `SDL_Quit'|

**

Answer 1

从您的错误消息中，问题与任何方式的异常无关，而是与您的链接有关。您正在使用SDL标头但未链接到SDL库，请使用正确的-L选项。

当我尝试使用异常时获取名称错误[CodeBlocks，C ++]

1 个答案: