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T O P I C R E V I E W
hamed1234	Posted - Aug 29 2020 : 07:02:55 Hi, Can I Draw rectangle/rectangles over the Imageenview when it showing a video or connected to a camera? I want to detect some area and draw rectangle(s) whit color borders.
3 L A T E S T R E P L I E S (Newest First)
xequte	Posted - Sep 04 2020 : 18:38:59 Hi The back buffer is likely cleared by the video frame. Did you look at the code in the TrackObjects.dpr demo? Nigel Xequte Software www.imageen.com
hamed1234	Posted - Sep 03 2020 : 07:27:05 Thank you xequte, I tried to use canvas but It did not work . I use this in button event : ImageEnView1.BackBuffer.Canvas.Pen.Width := 1; ImageEnView1.BackBuffer.Canvas.Pen.Color := clRed; ImageEnView1.BackBuffer.Canvas.Pen.Style := psSolid; ImageEnView1.BackBuffer.Canvas.MoveTo(10, 10); ImageEnView1.BackBuffer.Canvas.LineTo(100, 100); ImageEnView1.Update; Can you please tell me my mistake?
xequte	Posted - Aug 30 2020 : 17:24:03 Hi Yes, you can either draw to the canvas after the video content has been assigned to it, or you add a shape layer and move it as required. Please take a look at how it is done in the demo: \Demo\IEVision\TrackObjects\TrackObjects.dpr Nigel Xequte Software www.imageen.com