I have the following code in my QT application:
我的QT应用程序中有以下代码:
FILE * file = fopen(m_fileName.c_str(), "rb");
FILE * file = fopen(m_fileName.c_str(),“rb”);
, where the type of m_fileName
is std::string
. This code works fine in Visual Studio2012. But in QT 4.7.4 (MinGW compiler) my program crashes at this line.
,其中m_fileName的类型是std :: string。此代码在Visual Studio2012中正常工作。但在QT 4.7.4(MinGW编译器)中,我的程序在此行崩溃。
I don't really know what is wrong with this code. I haven't used MinGW a lot, so there must be something I don't know about.
我真的不知道这段代码有什么问题。我没有经常使用过MinGW,所以必须有一些我不知道的东西。
Update:
Code from main.cpp
:
来自main.cpp的代码:
std::string fileName = "test1.bmp";
m_pTexture1 = new Texture(GL_TEXTURE_2D, fileName);
if (!m_pTexture1->Load()) {
return;
}
Simplified code of Texture.cpp
:
Texture.cpp的简化代码:
Texture::Texture(GLenum TextureTarget, std::string FileName)
{
m_textureTarget = TextureTarget;
m_fileName = FileName;
}
bool Texture::Load()
{
try {
FILE * file = fopen(m_fileName.c_str(),"rb");
}
catch (...) {
std::cout « "Error loading texture '" « m_fileName;
return false;
}
}
Code of Texture.h
:
Texture.h代码:
class Texture
{
public:
Texture(GLenum TextureTarget, std::string FileName);
bool Load();
private:
std::string m_fileName;
GLenum m_textureTarget;
GLuint m_textureObj;
unsigned int width, height;
unsigned char * data;
};
Yes, @PaulMcKenzie was right. I tried to print m_fileName
in constructor and it crushed the program. Looks like m_fileName
can't be initialized. But, I don't know why this happens.
是的,@ PaulMcKenzie是对的。我试图在构造函数中打印m_fileName,它破坏了程序。看起来m_fileName无法初始化。但是,我不知道为什么会这样。
Update 2
I figured out it crushes because of printf
and other C i/o functions. Very strange.
我发现它因printf和其他C i / o功能而崩溃。很奇怪。
1 个解决方案
#1
Your code is syntax error. (bracket)
您的代码是语法错误。 (托架)
FILE * file = fopen(m_fileName.c_str()), "rb"); ^ this one
FILE * file = fopen(m_fileName.c_str()),“rb”); ^这一个
Did you compile successful?
你编译成功了吗?
#1
Your code is syntax error. (bracket)
您的代码是语法错误。 (托架)
FILE * file = fopen(m_fileName.c_str()), "rb"); ^ this one
FILE * file = fopen(m_fileName.c_str()),“rb”); ^这一个
Did you compile successful?
你编译成功了吗?