public virtual bool ShowDialogPreview { get; set; }
true if the preview will continue displaying during ShowDialog calls; otherwise, it is false.
using Leadtools;
using Leadtools.MediaFoundation;
using LeadtoolsMediaFoundationExamples.Fixtures;
public bool _result = false;
public CaptureCtrlForm _form = new CaptureCtrlForm(false);
// capture control
CaptureCtrl capturectrl;
// output file
string outFile = Path.Combine(LEAD_VARS.MediaDir, "CaptureCtrl_ShowDialogPreviewExample.avi");
public void ShowDialogPreviewExample()
{
// reference the capture control
capturectrl = _form.CaptureCtrl;
try
{
// set the source video device, select using your device name here
if (capturectrl.VideoDevices["USB"] == null)
{
throw new Exception("No USB video device available");
}
capturectrl.VideoDevices["USB"].Selected = true;
// set the target file and format
capturectrl.TargetFile = outFile;
capturectrl.TargetFormat = TargetFormatType.MP4;
capturectrl.FrameRate = 5;
// 5 frames per second
capturectrl.UseFrameRate = true;
capturectrl.TimeLimit = 10;
// just 10 seconds of capture time
capturectrl.UseTimeLimit = true;
if (capturectrl.IsModeAvailable(CaptureMode.Video))
{
// set show dialog preview, the preview mode will be enabled when ShowDialog is invoked
capturectrl.ShowDialogPreview = true;
// enable the preview
capturectrl.Preview = true;
// subscribe to the started event
capturectrl.Started += CaptureCtrl_Started;
// check the video capture dialog properties if available
if (capturectrl.HasDialog(CaptureDlg.TargetFormat))
{
capturectrl.ShowDialog(CaptureDlg.TargetFormat, _form);
}
// start capture
capturectrl.StartCapture(CaptureMode.Video);
// get the show dialog preview
bool ShowDialogPreview = capturectrl.ShowDialogPreview;
// set the result to what we expect
_result = (ShowDialogPreview && capturectrl.Preview);
}
}
catch (COMException)
{
_result = false;
}
catch (Exception)
{
_result = false;
}
}
void CaptureCtrl_Started(object sender, EventArgs e)
{
// stop the capture (we don't need a complete capture for this example)
capturectrl.StopCapture();
}
static class LEAD_VARS
{
public const string MediaDir = @"C:\LEADTOOLS23\Media";
}
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