what controls are visible and what text they are currently displaying.

Win32::GuiTest suits well with this approach

Alternatively, you might need to verify the gui in terms of are the right (colours of) pixels displayed at the right positions.
This kind of testing is really only necessary for testing gui libraries.

I don't know how one can do that but to compare screenshots.
Here I can spot another trap:
* The test machine has some "skins" enabled (depending on the Widget Toolkit)

Dodge This!

In reply to Re^2: testing GUIs by Ultra
in thread testing GUIs by spurperl

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