# \#activex **URL:** https://forum.commonvisionblox.com/tag/activex/2.md [Latest](https://forum.commonvisionblox.com/latest.md) · [Categories](https://forum.commonvisionblox.com/categories.md) · [Tags](https://forum.commonvisionblox.com/tags.md) --- ## [Save function take more execution time while multi threading](https://forum.commonvisionblox.com/t/save-function-take-more-execution-time-while-multi-threading/1715)
**Author:** [@keerthitheja](https://forum.commonvisionblox.com/u/keerthitheja)\ **Replies:** 10\ **Last updated:** [June 21, 2022, 12:02pm UTC](https://forum.commonvisionblox.com/t/save-function-take-more-execution-time-while-multi-threading/1715 "2022-06-21T12:02:29Z")
Hi, I have written a acquisition program to acquire and save images to disk. The save function is usually taking 80 msecs to save a .bmp image at 2k resolution to the disk. I am running my camera at 22 FPS. So, I always … --- ## [Read serial number by activeX](https://forum.commonvisionblox.com/t/read-serial-number-by-activex/1683)
**Author:** [@bertrand](https://forum.commonvisionblox.com/u/bertrand)\ **Replies:** 10\ **Last updated:** [April 28, 2022, 6:10am UTC](https://forum.commonvisionblox.com/t/read-serial-number-by-activex/1683 "2022-04-28T06:10:24Z")
Hello, I work on Windev software. I add on the project Cvb activeX (Image control and Display) On the Image control i can use “serial number”. I would like use it to check if the camera is online ( i have only 1 came… --- ## [Overlay Plugins not showing on Display Control](https://forum.commonvisionblox.com/t/overlay-plugins-not-showing-on-display-control/794)
**Author:** [@taserface](https://forum.commonvisionblox.com/u/taserface)\ **Replies:** 4\ **Last updated:** [September 26, 2019, 9:35am UTC](https://forum.commonvisionblox.com/t/overlay-plugins-not-showing-on-display-control/794 "2019-09-26T09:35:21Z")
G’day! I have ported one of my older applications to a new CVB and Visual studio version. Things generally seem to work fine-ish, but I can’t see any of the overlay I add to my display (Lines, Circles, a few Rectangles … --- ## [CVB 13.01.002 Core3DViewer crash](https://forum.commonvisionblox.com/t/cvb-13-01-002-core3dviewer-crash/560)
**Author:** [@Amicelli](https://forum.commonvisionblox.com/u/Amicelli)\ **Replies:** 4\ **Last updated:** [September 26, 2018, 3:35pm UTC](https://forum.commonvisionblox.com/t/cvb-13-01-002-core3dviewer-crash/560 "2018-09-26T15:35:49Z")
Hello, I am trying to create an application with Core3D, however if I add the component to my VS project and/or start the VB.net Core3D, it crashes. If I look at the event viewer I see the following: Have you seen th… --- ## [Display and WPF](https://forum.commonvisionblox.com/t/display-and-wpf/552)
**Author:** [@Mikael](https://forum.commonvisionblox.com/u/Mikael)\ **Replies:** 3\ **Last updated:** [September 14, 2018, 1:12pm UTC](https://forum.commonvisionblox.com/t/display-and-wpf/552 "2018-09-14T13:12:27Z")
Hello, I am using a WPF application with a display OCX. I’ve added a in a grid: \ \ \ \ **Author:** [@Bviaron](https://forum.commonvisionblox.com/u/Bviaron)\ **Replies:** 2\ **Last updated:** [September 14, 2018, 11:45am UTC](https://forum.commonvisionblox.com/t/activex-display-axcvdisplay-status-bar-font-color-change/548 "2018-09-14T11:45:54Z") Hi Guys, When I set the backcolor of my AxCVdisplay to the black color, I can not see the text of my status bar because its also black. I am wondering how can I change the color of the font of the status bar. Do you ha… --- ## [Can't use OCX components on x64 - failed to create AxHost](https://forum.commonvisionblox.com/t/cant-use-ocx-components-on-x64-failed-to-create-axhost/487)
**Author:** [@BaerTram](https://forum.commonvisionblox.com/u/BaerTram)\ **Replies:** 3\ **Last updated:** [July 5, 2018, 9:02am UTC](https://forum.commonvisionblox.com/t/cant-use-ocx-components-on-x64-failed-to-create-axhost/487 "2018-07-05T09:02:24Z")
So, I was plying around with OCX components, or rather I tried to do so unsuccessfully… I’m getting error pop-ups when trying to apply an OCX component to a form by dragging and dropping it over from the Toolbox. I get a… --- ## [Image Control not working properly in MFC application](https://forum.commonvisionblox.com/t/image-control-not-working-properly-in-mfc-application/501)
**Author:** [@LincolnshirePoacher](https://forum.commonvisionblox.com/u/LincolnshirePoacher)\ **Replies:** 3\ **Last updated:** [July 30, 2018, 11:31am UTC](https://forum.commonvisionblox.com/t/image-control-not-working-properly-in-mfc-application/501 "2018-07-30T11:31:13Z")
Hi, I have started a simple test application with MFC and added an Image and a Display control to it, basically doing what the Getting Started section in CommonVisionBlox.chm recommends. Loading an image seems to work,… --- ## [The Display Control](https://forum.commonvisionblox.com/t/the-display-control/391)
**Author:** [@mickybela](https://forum.commonvisionblox.com/u/mickybela)\ **Replies:** 5\ **Last updated:** [March 7, 2018, 8:56am UTC](https://forum.commonvisionblox.com/t/the-display-control/391 "2018-03-07T08:56:22Z")
I have a 1.6 megapixel camera and would like to display the camera images 1:1 in a display control (so without zooming, no scrollbars and so on). Ho do I go about this? --- ## [Package collision](https://forum.commonvisionblox.com/t/package-collision/276)
**Author:** [@CvK](https://forum.commonvisionblox.com/u/CvK)\ **Replies:** 5\ **Last updated:** [November 22, 2017, 2:27pm UTC](https://forum.commonvisionblox.com/t/package-collision/276 "2017-11-22T14:27:09Z")
This is a bit broad question, and I think it mostly relates to best pratices which might be usefull for other people too. Im using three cameras, where one of the three is streaming. Upon pressing a button, the streamin… --- ## [Hello world cvb](https://forum.commonvisionblox.com/t/hello-world-cvb/249)
**Author:** [@CvK](https://forum.commonvisionblox.com/u/CvK)\ **Replies:** 5\ **Last updated:** [October 18, 2017, 8:36am UTC](https://forum.commonvisionblox.com/t/hello-world-cvb/249 "2017-10-18T08:36:08Z")
private void Form1\_Load(object sender, EventArgs e) { var f= axCVimage1.LoadImageByDialog(); axCVdisplay1.Image = axCVimage1.Image; axCVdisplay1.Refresh(); } Doesn’t a… --- ## [Optical zoom control on EH6300 (C#)](https://forum.commonvisionblox.com/t/optical-zoom-control-on-eh6300-c/172)
**Author:** [@trob](https://forum.commonvisionblox.com/u/trob)\ **Replies:** 4\ **Last updated:** [July 27, 2017, 1:02pm UTC](https://forum.commonvisionblox.com/t/optical-zoom-control-on-eh6300-c/172 "2017-07-27T13:02:23Z")
Hi, I’ve used the CSMovie2Recorder tutorial program lately, and adjusted to my needs for a Sony EH6300 (ethernet). It works prefectly! Only point is that I’d need to control the Optical Zoom from a scrollBar I’ve added… --- ## [Display most recent image generated by multiple processing threads running in parallel](https://forum.commonvisionblox.com/t/display-most-recent-image-generated-by-multiple-processing-threads-running-in-parallel/128)
**Author:** [@VCmonkey](https://forum.commonvisionblox.com/u/VCmonkey)\ **Replies:** 11\ **Last updated:** [June 21, 2017, 5:57am UTC](https://forum.commonvisionblox.com/t/display-most-recent-image-generated-by-multiple-processing-threads-running-in-parallel/128 "2017-06-21T05:57:03Z")
I want to build up an application for a multiple-camera-system. The application provides multiple asynchronous image processing jobs (one for each camera) that run in parallel. The display in the GUI should always show t… --- ## [Setting the image property on the display control resets the zoom state](https://forum.commonvisionblox.com/t/setting-the-image-property-on-the-display-control-resets-the-zoom-state/27)
**Author:** [@taserface](https://forum.commonvisionblox.com/u/taserface)\ **Replies:** 3\ **Last updated:** [May 8, 2017, 12:36pm UTC](https://forum.commonvisionblox.com/t/setting-the-image-property-on-the-display-control-resets-the-zoom-state/27 "2017-05-08T12:36:28Z")
Whenever I set a new value in the Image property of the CVB Display OCX, the display's zoom state is reset to the initially used panorama mode. I'd like the zoom state to remain as it was before the new image handle was … --- ## [No images after loading CVB driver](https://forum.commonvisionblox.com/t/no-images-after-loading-cvb-driver/118)
**Author:** [@David](https://forum.commonvisionblox.com/u/David)\ **Replies:** 4\ **Last updated:** [May 29, 2017, 2:26pm UTC](https://forum.commonvisionblox.com/t/no-images-after-loading-cvb-driver/118 "2017-05-29T14:26:56Z")
Hi there, I am new to this forum and hope you can help me with a little problem I have here. I am working with a Dalsa Xcelera Board. I configured a hardware frametrigger using CamExpert and saved the configuration a… --- ## [Speed up RemoveAllOverlayObjects?](https://forum.commonvisionblox.com/t/speed-up-removealloverlayobjects/84)
**Author:** [@GaunterODim](https://forum.commonvisionblox.com/u/GaunterODim)\ **Replies:** 1\ **Last updated:** [May 16, 2017, 1:10pm UTC](https://forum.commonvisionblox.com/t/speed-up-removealloverlayobjects/84 "2017-05-16T13:10:14Z")
I have a display on which I use several instances of the cross hair plug in to mark the positions of objects my classifier has found. In some cases there can be hundreds of them, and deleting them (RemoveAllOverlayObject… --- ## [Display not drawn correctly in Delphi](https://forum.commonvisionblox.com/t/display-not-drawn-correctly-in-delphi/76)
**Author:** [@DeprecatedCoder](https://forum.commonvisionblox.com/u/DeprecatedCoder)\ **Replies:** 7\ **Last updated:** [May 15, 2017, 9:32am UTC](https://forum.commonvisionblox.com/t/display-not-drawn-correctly-in-delphi/76 "2017-05-15T09:32:56Z")
I've inherited a project that now extending. Unfortunately it hast to be done in Delphi which is not my strongest language. It seems that the display is not drawn correctly, when I do the following: procedure Display.… --- ## [Not all settings persistent on the display control](https://forum.commonvisionblox.com/t/not-all-settings-persistent-on-the-display-control/64)
**Author:** [@taserface](https://forum.commonvisionblox.com/u/taserface)\ **Replies:** 1\ **Last updated:** [May 11, 2017, 9:13am UTC](https://forum.commonvisionblox.com/t/not-all-settings-persistent-on-the-display-control/64 "2017-05-11T09:13:05Z")
The display control seems to serialize some of its settings (like FileName) but when I change the RedPage, GreenPage or BluePage setting it's lost when I start my program. --- ## [Convert mouse coordinate to image coordinate](https://forum.commonvisionblox.com/t/convert-mouse-coordinate-to-image-coordinate/32)
**Author:** [@GaunterODim](https://forum.commonvisionblox.com/u/GaunterODim)\ **Replies:** 1\ **Last updated:** [May 8, 2017, 3:46pm UTC](https://forum.commonvisionblox.com/t/convert-mouse-coordinate-to-image-coordinate/32 "2017-05-08T15:46:19Z")
I have an application with a display control on a form, and I want to react to clicks inside the display by coloring the pixel that has been clicked by the user. But the mouse coordinate does not seem to correlate with t… --- ## [Crosshair plug in - one or two vertices?](https://forum.commonvisionblox.com/t/crosshair-plug-in-one-or-two-vertices/39)
**Author:** [@taserface](https://forum.commonvisionblox.com/u/taserface)\ **Replies:** 1\ **Last updated:** [May 9, 2017, 9:47am UTC](https://forum.commonvisionblox.com/t/crosshair-plug-in-one-or-two-vertices/39 "2017-05-09T09:47:47Z")
When creating a crosshair plug in I need two vertices. But axCVDisplay1.GetOverlayObjectPosition always returns coordinate (0, 0) for the second vertex :confused: --- ## [Problem creating overlay plug in in C# forms application](https://forum.commonvisionblox.com/t/problem-creating-overlay-plug-in-in-c-forms-application/37)
**Author:** [@taserface](https://forum.commonvisionblox.com/u/taserface)\ **Replies:** 1\ **Last updated:** [May 9, 2017, 9:12am UTC](https://forum.commonvisionblox.com/t/problem-creating-overlay-plug-in-in-c-forms-application/37 "2017-05-09T09:12:04Z")
In a Windows Forms application I use the following code to add an overlay plugin to my display control: unsafe { var pt = new Point\[2\]; pt\[0\].X = 0; pt\[0\].Y = 0; pt\[1\].X = 100; pt\[1\].Y = 100; fixed (Point… --- ## [Compilation Errors with Borland CBuilder](https://forum.commonvisionblox.com/t/compilation-errors-with-borland-cbuilder/30)
**Author:** [@GaunterODim](https://forum.commonvisionblox.com/u/GaunterODim)\ **Replies:** 1\ **Last updated:** [May 8, 2017, 2:57pm UTC](https://forum.commonvisionblox.com/t/compilation-errors-with-borland-cbuilder/30 "2017-05-08T14:57:09Z")
I have added a display control and an image control to my application's form (Borland CBuilder 6), now I get two errors: 1. CBuilder shows me the message The CVimage1CVCError method referenced by CVimage1-\>OnCVCError has… --- ## [1:1 Display With the Display Control](https://forum.commonvisionblox.com/t/1-1-display-with-the-display-control/24)
**Author:** [@taserface](https://forum.commonvisionblox.com/u/taserface)\ **Replies:** 1\ **Last updated:** [May 8, 2017, 9:43am UTC](https://forum.commonvisionblox.com/t/1-1-display-with-the-display-control/24 "2017-05-08T09:43:54Z")
I have a 1.6 megapixel camera and would like to display the camera images 1:1 in a display control (so without zooming, no scrollbars and so on). Ho do I go about this?