C++如何保存bmp图片

#include <windows.h>
int main()
{
    // 创建一个 200x200 像素的位图，色彩深度为 24
    HBITMAP hBitmap = CreateBitmap(200, 200, 24);
    // 保存位图到文件 "image.bmp"
    SaveBitmap(hBitmap, "image.bmp");
    return 0;
}

//----------------------------------------------------------------------------------
/**
\brief   将m_pBufferRGB图像数据保存成BMP图片
\return  无
*/
//----------------------------------------------------------------------------------
void CFIRADlg::SaveImage()
{
	// TODO: Add your control notification handler code here
	DWORD		         dwImageSize = (DWORD)(m_nImageWidth * m_nImageHeight * 3);
	BITMAPFILEHEADER     stBfh = { 0 };
	DWORD		         dwBytesRead = 0;
	SYSTEMTIME           sysTime;
	CString              strFileName = "";
	//创建保存图像的文件夹
	BOOL bRet = CreateDirectory(m_strFilePath, NULL);
	if (bRet)
	{
		SetFileAttributes(m_strFilePath, FILE_ATTRIBUTE_NORMAL);
	}
	// 获取当前时间为图像保存的默认名称
	GetLocalTime(&sysTime);
	CString imagename;
	imagename = _T("%s\\%d_%d_%d_%d_%d_%d_%d.bmp");
	strFileName.Format(imagename, m_strFilePath,
		sysTime.wYear,
		sysTime.wMonth,
		sysTime.wDay,
		sysTime.wHour,
		sysTime.wMinute,
		sysTime.wSecond,
		sysTime.wMilliseconds);
	stBfh.bfType = (WORD)'M' << 8 | 'B';			 //定义文件类型
	stBfh.bfOffBits = sizeof(BITMAPFILEHEADER) + sizeof(BITMAPINFOHEADER);	//定义文件头大小彩色
	stBfh.bfSize = stBfh.bfOffBits + dwImageSize; //文件大小
	//创建文件
	HANDLE hFile = ::CreateFile(strFileName,
		GENERIC_WRITE,
		0,
		NULL,
		CREATE_ALWAYS,
		FILE_ATTRIBUTE_NORMAL,
		NULL);
	if (hFile != INVALID_HANDLE_VALUE)
	{
		::WriteFile(hFile, &stBfh, sizeof(BITMAPFILEHEADER), &dwBytesRead, NULL);
		::WriteFile(hFile, m_pBmpInfo, sizeof(BITMAPINFOHEADER), &dwBytesRead, NULL);  //彩色
		::WriteFile(hFile, m_pBufferRGB, dwImageSize, &dwBytesRead, NULL);
		CloseHandle(hFile);
	}
}

//---------------------------------------------------------------------------------
/**
\brief   相机保存Raw图像
\param   pRawBuf      Raw图像
\param   nImageSize   图像大小
\param   srtSavePath  图像存储路径
\return  void
*/
//----------------------------------------------------------------------------------
void CFIRADlg::SaveRawImage(BYTE* pRawBuf, int nImageSize, CString srtSavePath)
{
	if ((pRawBuf == NULL) || (srtSavePath == ""))
	{
		return;
	}
	CString strFileName = "";               // 图像存储路径
	DWORD   dwImageSize = nImageSize;       // 写入文件的长度
	DWORD   dwBytesRead = 0;                // 文件读取的长度
	// 获取当前时间
	SYSTEMTIME  sysTime;
	GetLocalTime(&sysTime);
	//创建保存图像的文件夹
	BOOL bRet = ::CreateDirectory(srtSavePath, NULL);
	if (bRet)
	{
		::SetFileAttributes(srtSavePath, FILE_ATTRIBUTE_NORMAL);
	}
	// 获取当前时间为图像保存的默认名称
	strFileName.Format("%s\\%d_%d_%d_%d_%d_%d_%d.raw",
		srtSavePath,
		sysTime.wYear,
		sysTime.wMonth,
		sysTime.wDay,
		sysTime.wHour,
		sysTime.wMinute,
		sysTime.wSecond,
		sysTime.wMilliseconds);
	// 创建文件
	HANDLE hFile = ::CreateFile(strFileName,
		GENERIC_WRITE,
		FILE_SHARE_READ,
		NULL,
		CREATE_ALWAYS,
		FILE_ATTRIBUTE_NORMAL,
		NULL);
	if (hFile == INVALID_HANDLE_VALUE)   // 创建失败则返回
	{
		return;
	}
	else                                 // 保存Raw图像          
	{
		::WriteFile(hFile, pRawBuf, dwImageSize, &dwBytesRead, NULL);
		CloseHandle(hFile);
	}
}