Why the fonts dialogue windows pop up window during execution of this vi?

(1) press and hold down ctrl + R keys.

(2) in a few seconds, the police of dialogue windows pop up window immediately.

Why is this happening? Is this a bug?

Am using LabVIEW 8.5 and Windows XP SP2

Hello

You called this dialog box yourself from your code

You have sent 0 x 30 code of virtual key directly to the keyboard via the keybd_event function starting from user32.dll.

So, now you run your VI with Ctrl + R. Thus, control is pressed, then call keybd_event inbound (with 0 x 30, which is in fact the key code 0), so now you have the shortcut Ctrl + 0, which is the policy dialog box. No magic and no bug. On my PC its appeared sometimes, sometimes not (race between the events of keyboard and call keybd_event condition).

Best regards

Andrey.

Tags: NI Software

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