Question

MFC如歌让图片自适应PictureControl大小

点击按钮加载图片，希望在源码上改
void CDrawCallDlg::OnBnClickedButton1()
{

CStatic* pWnd = (CStatic*)GetDlgItem(IDC_STATICS);
//设置静态控件窗口风格为位图居中显示
pWnd->ModifyStyle(0xf, SS_BITMAP | SS_CENTERIMAGE);
CImage image;
image.Load(_T("res\\pic0036.jpg"));
CBitmap* pBitmap = CBitmap::FromHandle(image);

pWnd->SetBitmap(*pBitmap);
}

Answer 1

在对话框收到WM_SIZE时，先获取对话框的大小，然后改变picturebox的大小即可。

CRect rcClient,rcPicture;
GetClientRect(&rcClient);
m_PictureBox.GetClientRect(&rcPicture);

// 移动picturebox到对话框的左上角。
rcPicture.MoveToX(0);
rcPicture.MoveToY(0);
// pircurebox的长宽是对话框长宽的2分之1.
rcPicture.right = rcClient.Width() / 2;
rcPicture.bottom = rcClient.Height() / 2;
// 移动picturebox.
m_PictureBox.MoveWindow(rcPicture);

Answer 2

是不是想用CImage对图片进行放大缩小?