image resolution

[eMTy]

Hello guys,

are there any possiblities in WinCC OA, to get the resolution of an image? In particular JPGs and PNGs

kr
Michel

[mkoller]

With resolution you mean the size (width x height) ?
If so, you can see this information in the preview tooltip when the image is hovered in the project tree in gedi.
If you mean from within CTRL, no, there's currently no function for that.
What's your usecase ?

[eMTy]

Exactly, I mean the size. I would like to resize a panel and a rectangle to fit the size of the picture

[eMTy]

Or is there a dll or something like that?

[mkoller]

Do you know how to write and compile a Ctrl Extension ?
If so, download Qt4 opensource for your platform and use the QImage class, e.g.
QImage image(fileName);
image.width() and image.height() gives you the result.

[mkoller]

Another idea: use ImageMagick's tool "identify" and call it via system() and parse the resulting output.
See http://www.imagemagick.org/script/identify.php

[eMTy]

Thank you