ShowIf evaluator statement side effects

Help & Support
1

I thought I was seeing things and it turned out that I was. The attached video demonstrates some odd side effects associated with a simple button with a single evaluator statement.

@showif:=((FileCount(true,"*.ocb") == 1) && (FileCount(true,"*.*") == 1))

showif test.dcf (435 Bytes)

For testing purposes I created a new toolbar with just this one button on it. The button should only show if a single .ocb file is selected in the current tab. The starting point is as shown in the static image. The button is correctly shown and because I am hovering my mouse over the button, its description is also displayed. The video demonstrates what happens when I alternate between selecting a single .ocb and selecting something else. Some of the time it works as expected but sometimes it triggers a copy of the .ocb onto itself and on other occasions it also triggers the download of another unrelated offline file. I subsequently tested with the same set of files in a local (non OneDrive) folder and the same download trigger behaviour happens. Opus v13.4.8 on Windows 10.

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image1612×589 48.2 KB

2

It's not a side effect of the command. It's a result of the toolbar resizing while your mouse button is down, which is acting like a drag & drop on the file the mouse was over if the mouse moves slightly after the resize and before the button is released.

Do it in a real situation where the toolbar has some items that aren't hidden and the problem will go away.

3

Well diagnosed Leo. If my hand had been steadier on the mouse it would never have happened. :blush: I do sometimes test a new button on its own and with the option of conditional button visibility in v13 this is something for me to remember.