小编aCu*_*ria的帖子

在下面的代码片段中,我为for循环的每次迭代泄漏了52个字节的内存,但几个小时后我无法确定为什么= /

任何帮助将不胜感激.

    for(unsigned char i=0; i<128; ++i)
    {
        ttf.loadGlyph(i);
        FT_Glyph glyph;
        FT_Get_Glyph(ttf.ftFace_->glyph, &glyph);
        FT_Glyph_To_Bitmap( &glyph, ft_render_mode_normal, 0, 1 );
        FT_BitmapGlyph bitmap_glyph = (FT_BitmapGlyph)glyph;
        FT_Bitmap& bitmap = bitmap_glyph->bitmap;

        int width = nextPowerOf2(bitmap.width);
        int height = nextPowerOf2(bitmap.rows);
        GLubyte* expanded_data = new GLubyte[ 2 * width * height]; // Allocate Memory For The Texture Data.

        for(int j=0; j <height;j++) {
            for(int i=0; i < width; i++){
                expanded_data[2*(i+j*width)]= expanded_data[2*(i+j*width)+1] =
                    (i>=bitmap.width || j>=bitmap.rows) ?
                    0 : bitmap.buffer[i + bitmap.width*j];
            }
        }
        glBindTexture( GL_TEXTURE_2D, …

我更感兴趣的是知道它为什么不编译而不是修复代码.

致命错误C1001:编译器中发生内部错误.

int main()
{
    class MyClass
    {
    public:
        MyClass(const std::string & name)
            : name_(name) {}
        std::string name_;
    };

    auto creator = []() -> MyClass *
    {
        return new MyClass("Hello World");
    };

    MyClass * pMyClass = creator();

    return 0;
}

调用ExecMethod时,以下代码失败.任何人都可以找出我做错了什么吗？

#define _WIN32_DCOM

#include <iostream>
using namespace std;
#include <comdef.h>
#include <Wbemidl.h>

# pragma comment(lib, "wbemuuid.lib")

int main(int iArgCnt, char ** argv)
{
    HRESULT hres;

    // Step 1: --------------------------------------------------
    // Initialize COM. ------------------------------------------

    hres =  CoInitializeEx(0, COINIT_MULTITHREADED); 
    if (FAILED(hres))
    {
        cout << "Failed to initialize COM library. Error code = 0x" 
             << hex << hres << endl;
        return 1;                  // Program has failed.
    }

    // Step 2: --------------------------------------------------
    // Set general COM security levels --------------------------
    // Note: If you are …

我正在尝试为矩阵/向量构建模板类

我想将宏扩展为如下所示

#define ELEMENTS(M, N) expands into

m00, m01, m02, ... , m0N,
m10, m11, m12, ... , m1N,
...
...
...
mm0, mN1, mN2, ... , mMN

这可能吗？