The Camera control

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Help / Developing an application or website / Controls, windows and pages / Controls: Available types / Camera control

Overview of the Camera control
Window control
Creating a Camera control in a WINDEV window
Displaying the camera preview stream

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The Camera control

Overview of the Camera control

Window control

The Camera control is used to:

display the preview stream of a camera connected to the current computer.
display the camera preview stream of an Android or iOS device.
read and decode the bar codes. For more details, see Camera field: decode barcodes.

You can save this video or save a video snapshot.

This help page presents the use of the Camera control in a WINDEV window. For WINDEV Mobile, see Camera control (mobile application).

Creating a Camera control in a WINDEV window

To create a Camera control:

On the "Creation" tab, in the "Graphic controls" group, expand "Video and capture" and select "Camera".
Click at the desired location to create the control. The control appears in the editor.

To view the characteristics of the control, select "Description" in the context menu.

The Camera control can be manipulated programmatically using the Camera functions.
Note: These functions are also available with prefix syntax.. For more details, see Camera functions (Prefix syntax).

Remarks:

The Camera control is supported in all Windows versions, regardless of the driver installed, via the DirectShow technology. The behavior of the previous versions can be restored by selecting the "Use the former 'Video for Windows' APIs (compatibility)" option.
Note: It is not advisable to use a camera field with DirectShow technology and a compatible camera field in the same window.
To retrieve an image transmitted by a Camera, specify the video driver used ("General" tab in the control description window). This driver can be defined programmatically with the Driver property or the CameraChangeDriver function.

Displaying the camera preview stream

Only the camera preview stream is displayed in a Camera control.

To view:

an image captured with CameraCapture, use an Image control.
a video captured with CameraCapture, use a Multimedia control.

Related Examples:

Complete examples (WINDEV): WD WebCam

[ + ] This example explains how to include a WebCam in a WINDEV application.
The following topics will be presented in this example:
1/ Camera control
2/ Use of the video functions

Summary of the example supplied with WINDEV:
This example explains how a WebCam can be included in a WINDEV window.
You have the ability to view the image captured by the camera, to perform an instant capture and to film the scene broadcasted as a Windows animation (AVI).

Unit examples (WINDEV): The Camera control

[ + ] Using the "Web Camera" control to:
- Select the device used
- Capture a video broadcasted by a Web Camera
- Save an image broadcasted by a Web Camera