I like the IMAQ External Display Window (i.e. WindDraw) and prefer it over putting images (be they static or from a video camera) on a LabView front panel (for a variety of reasons). The one gripe I have is that the WindDraw window doesn't recieve keyboard input through the event structure. It's possible to still catch the input by using Labview's Acquire Input Data vi but there's a problem. Running this VI with even a small amount of logic to determine when a key is released causes the loop to run slow enough that it misses keyboard input (when I'm typing at normal speed). My feeling is the Event Structure is a bit faster and, more over, I don't need any logic in the loop to isolate key releases (since those are their own seperate event).
I've looked around the Windows API for some answers but haven't found any. I tried EnableWindow on the Front Panel after it loses focus but the Event Structure won't activate. Is there a trick I can use here to make the Front Panel continue to register input without it being the window in Focus. I'd prefer not to force a window to be top most and have focus be independent of the top most window.
Is there a solution in 8.1 that was added that solves this issue that I didn't notice? I can live with the lost keystrokes, but this application just won't be complete without it.
