[Qt] is it possible to call private grabMouseWhileInWindow function?

[Paul Ishenin]

Hello, Items specific to the Qt widget set

Qt mouse grab is very heavy. On windows it can grab input so that only 
ctrl+alt+del can unlock this grab. Qt installs windows hook which is imo 
a very big hack. LCL uses mouse grabs often and we dont need so heavy 
grabs since LCL can lock the whole system with them. At the same moment 
qt guys uses grabMouseWhileInWindow for their tasks. Can we publish this 
function in the bindings library then I will use it for windows-qt 
application.

Best regards,
Paul Ishenin.