Basler相机MFC程序,StartGrabbing调用后自动调用OnImageGrabbed,图像怎么显示到指定区域
时间: 2024-03-24 12:40:50 浏览: 60
在MFC程序中,您可以在OnImageGrabbed函数中获取图像数据,并将其显示在指定区域。以下是一个简单的示例:
1. 在您的MFC对话框类中添加一个静态控件,用于显示图像。
2. 在OnInitDialog函数中,获取静态控件的句柄,并创建一个GDI+的位图对象。
```
m_pWndImage = GetDlgItem(IDC_STATIC_IMAGE); // 获取静态控件句柄
m_pBitmap = new Gdiplus::Bitmap(m_nWidth, m_nHeight, PixelFormat24bppRGB); // 创建位图对象
```
3. 在OnImageGrabbed函数中,获取图像数据,并将其绘制到位图对象上。
```
// 获取图像数据
const uint8_t* pBuffer = (uint8_t*)pBufferPtr;
int nImageSize = nWidth * nHeight * 3;
// 绘制图像
Gdiplus::BitmapData bitmapData;
m_pBitmap->LockBits(nullptr, Gdiplus::ImageLockModeWrite, PixelFormat24bppRGB, &bitmapData);
memcpy(bitmapData.Scan0, pBuffer, nImageSize);
m_pBitmap->UnlockBits(&bitmapData);
```
4. 在OnPaint函数中,将位图对象绘制到静态控件上。
```
CPaintDC dc(this);
Graphics graphics(dc.m_hDC);
graphics.DrawImage(m_pBitmap, 0, 0, m_nWidth, m_nHeight);
```
这样,当相机抓取到图像时,会自动调用OnImageGrabbed函数,并将图像数据绘制到位图对象上。在下一次重绘窗口时,位图对象会被绘制到静态控件上,从而显示图像。
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