QT achieve switching between multiple screens! ! ! A small program is very simple.

popup
.....\Makefile
.....\popup.cpp
.....\popup.doc
.....\popup.dsp
.....\popup.exe
.....\popup.h
.....\popup.pro
.....\README
.....\tmp
.....\...\moc
.....\...\...\release_mt_shared
.....\...\...\.................\moc_popup.cpp
.....\...\obj
.....\...\...\release_mt_shared
.....\...\...\.................\moc_popup.obj
.....\...\...\.................\popup.obj

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