VC++(MFC) VS2015 picture save image [從畫面元件存成圖片]

資料來源: https://blog.csdn.net/A478257115/article/details/53031799

void CIdCardDlg::PictureSave(UINT ID)
{
 CWnd* bmpShow = GetDlgItem(ID);
 CDC *pdc = bmpShow->GetDC();
 CImage  imag;//#include "atlimage.h"
 CRect rect;

 GetClientRect(&rect);        //获取画布大小
 bmpShow->GetWindowRect(&rect);
 imag.Create(rect.Width(), rect.Height(), 32);
 ::BitBlt(imag.GetDC(), 0, 0, rect.Width(), rect.Height(), pdc->m_hDC, 0, 0, SRCCOPY);

 /*
 TCHAR szFilter[] = _T("jpg file(*.jpg)|*.jpg|bmp file(*.bmp)|*.bmp|所有文件(*.*)|*.*||");  //文件格式过滤
    // 构造保存文件对话框    
 CFileDialog fileDlg(FALSE, _T("jpg"), _T("*.jpg"), OFN_HIDEREADONLY | OFN_OVERWRITEPROMPT, szFilter, this);
 fileDlg.m_ofn.lpstrTitle = _T("保存直方图");  //保存对话窗口标题名
 CString picturePath;
 if (IDOK == fileDlg.DoModal())  //按下确认键
 {
 picturePath = fileDlg.GetPathName();  //文件路径
 }
 */
 CString picturePath="test.jpg";
 HRESULT hResult = imag.Save(picturePath); //保存图片
 ReleaseDC(pdc);
 imag.ReleaseDC();
}