C++小白又遇到问题了

/*

 * Bitmap.h

 *

 *  Created on: 2011-8-26

 *      Author: ray-ni

 */



#ifndef BITMAP_H_

#define BITMAP_H_



//#pragma pack(2)



typedef unsigned int DWORD;

typedef int LONG;

typedef unsigned short WORD;



/**

 * 鏂囦欢淇℃伅澶? */

typedef struct tagBITMAPFILEHEADER {

  WORD    bfType;

  DWORD   bfSize;

  WORD    bfReserved1;

  WORD    bfReserved2;

  DWORD   bfOffBits;

} BITMAPFILEHEADER, *PBITMAPFILEHEADER;



/**

 * 浣嶅浘淇℃伅澶? */

typedef struct tagBITMAPINFOHEADER{

  DWORD  biSize;

  LONG   biWidth;

  LONG   biHeight;

  WORD   biPlanes;

  WORD   biBitCount;

  DWORD  biCompression;

  DWORD  biSizeImage;

  LONG   biXPelsPerMeter;

  LONG   biYPelsPerMeter;

  DWORD  biClrUsed;

  DWORD  biClrImportant;

} BITMAPINFOHEADER, *PBITMAPINFOHEADER;



/**

 * 璋冭壊鏉夸俊鎭? */

typedef struct tagRGBQUAD {

        char  rgbBlue;

        char  rgbGreen;

        char  rgbRed;

        char  rgbReserved;

} RGBQUAD, *PRGBQUAD;



#define BI_RGB        0L

#define BI_RLE8       1L

#define BI_RLE4       2L

#define BI_BITFIELDS  3L

#define BI_JPEG       4L

#define BI_PNG        5L



//#pragma pack()



class BitmapUtils{

public:

	BitmapUtils(int width, int height);

	void setColorTable(unsigned char** colors, int size);

	void addData(char* data, int length);

	void save();



private:

	BITMAPFILEHEADER mHead;

	BITMAPINFOHEADER mInfo;

	PRGBQUAD mColorTable;

	int mColorTableSize;

	char* mData;

	int mDataSize;

};





#endif /* BITMAP_H_ */

/*

 * BitmapUtils.cpp

 *

 *  Created on: 2011-8-29

 *      Author: ray-ni

 */

#include "../head/Bitmap.h"

#include <cstdio>

#include <cstdlib>



BitmapUtils::BitmapUtils(int width, int height) {

  

         char* tmp = new char[10]; //这里出错。。。

	//璁惧畾鏂囦欢澶?	this->mHead.bfType = 0x4D42;

	this->mHead.bfSize = 54;

	this->mHead.bfReserved1 = 0;

	this->mHead.bfReserved2 = 0;

	this->mHead.bfOffBits = 0;

	//璁惧畾浣嶅浘淇℃伅

	this->mInfo.biSize = 40;

	this->mInfo.biWidth = width;

	this->mInfo.biHeight = height;

	this->mInfo.biPlanes = 1;

	this->mInfo.biBitCount = 8;

	this->mInfo.biCompression = BI_RGB;

	this->mInfo.biSizeImage = 0;

	this->mInfo.biXPelsPerMeter = 0;

	this->mInfo.biYPelsPerMeter = 0;

	this->mInfo.biClrUsed = 0;

	this->mInfo.biClrImportant = 0;

}



/**

 * 璁惧畾璋冭壊鏉? */

void BitmapUtils::setColorTable(unsigned char** colors, int size) {

	this->mColorTableSize = size;

	this->mColorTable = new RGBQUAD[size];

	for (int i = 0; i < size; i++) {

		this->mColorTable[i].rgbBlue = colors[i][0];

		this->mColorTable[i].rgbGreen = colors[i][1];

		this->mColorTable[i].rgbRed = colors[i][2];

		this->mColorTable[i].rgbReserved = 0;

	}

	this->mHead.bfSize += size * 4;

	this->mHead.bfOffBits = this->mHead.bfSize;

}



/**

 * 娣诲姞棰滆壊鏁版嵁

 */

void BitmapUtils::addData(char* data, int length) {

	this->mData = data;

	this->mDataSize = length;

	this->mHead.bfSize += this->mInfo.biHeight *((this->mInfo.biWidth +3)/4*4);

}



/**

 * 淇濆瓨鏂囦欢

 */

void BitmapUtils::save() {

	FILE* file = fopen("./test.bmp", "w+");

	fwrite(&this->mHead, 1, sizeof(this->mHead), file);

	fwrite(&this->mInfo, 1, sizeof(this->mInfo), file);

	fwrite(&this->mColorTable, 4, this->mColorTableSize, file);

	char zero = 0 , j = 0;

	for (int i = this->mInfo.biHeight - 1; i >= 0; i--) {

		 j= 0;

		while (j < this->mInfo.biWidth) {

			fwrite(&this->mData + i * this->mInfo.biWidth, 1, 1, file);

			j++;

		}

		while ((j % 4) != 0) {

			fwrite(&zero, 1, 1, file);

			j++;

		}

	}

	fclose(file);

	delete[] this->mColorTable;

}