如何冻结CameraControl中显示的视频？

Question

在调用TakeSnapshot（）以便显示获取的图像时，如何冻结CameraControl中显示的视频？

基本上，我想以自己的形式重建与devexpress TakePictureDialog类中相同的捕获行为，因为在TakePictureDialog中似乎无法存储用户选择的相机设备，我需要这样做在我的应用中

我遵循了这些文章中的说明和示例：

• https://www.devexpress.com/Support/Center/Question/Details/T269133/obtaining-the-last-selected-camera-device-and-restoring-it-in-a-takepicturedialog
• https://documentation.devexpress.com/WindowsForms/114582/Controls-and-Libraries/Editors-and-Simple-Controls/Camera-Control
• UserAppDataReigistry not persisting

Answer 1

欢迎来到stackoverflow。

CameraControl本身不提供该功能。

无论哪种方式，您都可以使用Paint事件来渲染通过TakeSnapshot获取的图像。

类似这样的东西：

private void CameraControl1_Paint(object sender, PaintEventArgs e)
{
    CameraControl c = sender as CameraControl;
    if (isStopped && img != null)
         e.Graphics.DrawImage(img, new Rectangle(0,0, c.Width, c.Height));
}


bool isStopped = false;
Bitmap img;
private void button1_Click(object sender, EventArgs e)
{
    img = cameraControl1.TakeSnapshot();
    cameraControl1.Stop();
    isStopped = true;
}

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