[Qt-interest] Different min size in designer vs. runtime?

Israel Brewster israel at frontierflying.com
Wed Jul 22 18:29:47 CEST 2009


I have run into this problem a number of times. I design a window in  
QtDesigner (actually the designer component of QtCreator), and make it  
as small as I can - I want the window size to be fixed at the minimum  
possible size. Upon running the application however, when the window  
comes up, not only can I still resize it, but I can actually make it  
smaller than I had it in designer (see attached screen shots, both of  
which are at the smallest size I can make them). In designer, I have  
set the following properties of the dialog:

QWidget:sizePolicy:HorizontalPolicy: Minimum (also tried fixed)
QWidget:sizePolicy:VerticalPolicy:Minimum (also tried fixed)
QDialog:sizeGripEnabled:False
Layout (vertical layout):LayoutSizeConstraint:setMinimumSize (also  
tried setFixedSize)

In all cases, the window in designer (and, as a result, the window  
when you first open it) is noticeably larger than the smallest size I  
can resize it to. Also, in all cases, I can still resize the window,  
although resizing does appear to be limited to the range from the  
smallest size I can make in when running to the size set in the  
designer, i.e. I can only resize it to make it smaller than what I  
designed, not larger. What I want is a dialog that is truly the  
minimum possible size when opened, and which can not be resized  
(although I don't care about the latter as much). What am I missing?  
What can I do to make this work? Thanks.
-----------------------------------------------
Israel Brewster
Computer Support Technician II
Frontier Flying Service Inc.
5245 Airport Industrial Rd
Fairbanks, AK 99709
(907) 450-7250 x293
-----------------------------------------------
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