Strange behavior of the PNG with transparent background

Hi all

I am facing a strange problem on a request of my friends that I'm upgrading. The application is written in CVI2009SP1 and is already running on the customer's site. I am now adding several new features and made some changes in the application file UIR and all of a sudden all the images I have show a black background instead of transparency.

The strange thing is that I see the images correctly in the editor of the UIR, the black background being shown only at runtime, no matter if debug or release.

It is an example of wat I see:

I tried to reload the image in control after checking transparency but the situation has not changed. The problem is that the images in. The other images, PNG format in. Format ICO show properly.

I see this behavior in my office on both two machines wirth 2009SP1 for 2012SP1 development and execution. The same phenomenon occurs on the client PC runtime 2010SP1 and no IDE installed. If I run the original application with the UIR unmodified, transparency is properly managed. I'm not operated by program images, which are only decorative elements on the user interface.

What can happen?


Tags: NI Software

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