I've installed Scada-LTS v.2.5 on a Raspberry Pi. Now I want to make a graphical view. How ist it possible to add images as a background? I can see the images in /opt/tomcat/apachev9/webapps/ScadaBR/uploads but I can't use it in the Webbrowser
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I am using a directshow player which renders onto a panel using C++ Builder. I wish to duplicate what is playing onto a second monitor. Does directshow support any sort of events to say when a frame has been rendered by the renderer?
I am using the standard Microsoft player example which chooses the first available renderer which will work for the AVI file EVR, VRM9 this plays and renders fine. I would like to copy the rendered images as they update (50fps or 60fps max) and put them on a second screen which doesn't have all my other associated buttons and panels.
You need to configure EVR or VMR9 to use windowless render mode and implement a Custom Presenter for EVR which will be responsible for rendering of each received frame (texture). You'll then be able to render this texture on separate windows.
Here is a link to implementing a Custom Presenter for VMR9 as well, but IMO EVR is better to be used especially in Win 7 and higher.
As I am putting more widgets on top of more layouts in my application, the space where I design the GUI is getting also bigger for the Qt-creator interface.
I have many buttons and frames which are out of reach. I cannot see them (or click them, of course). I don't know how they look until I run the whole application for debugging.
Is there is a way to zoom out/in the main frame (the whole playground) so that I can see my full GUI design on the UI of Qt IDE?
P.S.: I am working on macBook 13"
Zooming is not possible. You can use Tools -> Form Editor -> Preview.
If the viewport gets too small the QtCreator shows scrollbars which allow to move the part of interest into view.
Note, on some system configurations the scollbars may be very small and hard to handle.
You can use this steps
Tool-->options-> Text editor ->zoom
Text editor
I've got two applications on my Raspberry Pi drawing things on the display. The first one is a video stream, the second an overlay with transparency. The video stream is rendered by the official raspivid program, and my overlay with eglfs (Qt QML).
How can I choose the order images are rendered so that my overlay is on top of the video, and not the opposite like now. Who manages the buffer access? How to configure it?
I would like to create an application similar to the screenshot, using the Qt Widgets framework (not QML like on the screenshot).
Unfortunately I am unable to remove the default CBA area. If I enter full-screen mode with
QApplication::setAttribute(Qt::AA_S60DontConstructApplicationPanes);
the status area on the top is also removed which is not what I need.
I am building a QT application which I customize through QT stylesheets. The images I use for the controls are SVG images which are rendered properly when ran in Linux. But when I load the QT application into a mobile device, the SVG images don't seem to appear.
Does anyone know what's going on? What should I do to make the SVG images work?
First check the log file in your emulator and find out what is the error occurred:
svg while implementing on mobile device may fail because of the following scenarios.
1.Memory footpring issue because of different OS;mobile OS is relatively small in size.
2.Device type on which it runs.
3.Framework that is used for implementing SVG applications.The framework availability
4.Sometime image encoding can also be an issue.
So need to get a framework that support all these characters on mobile device.
Currently there are few open source and commercail frameworks available.You will get more from this link
http://developers.sun.com/mobility/midp/articles/s2dvg/index.html