#IMAGEVIEWER GITHUB CODE#

The setSizePolicy() sets the size policy to policy. The setBackgroundRole() method let us use a color role for the background, which means one of the predefined color of the style applied to the widget. ScrollArea->setBackgroundRole(QPalette::Dark) ImageLabel->setSizePolicy(QSizePolicy::Ignored, QSizePolicy::Ignored) ImageLabel->setBackgroundRole(QPalette::Base) ImageViewer::ImageViewer(QWidget *parent) :

#IMAGEVIEWER GITHUB CODE#

This time, we set up the QScrollArea and the QLable using code but not Designer. More work on the Scroll area and the Label If the child widget exceeds the size of the frame, QScrollArea automatically provides scroll bars. QScrollArea provides a scrolling view around another widget. QLabel is typically used for displaying text, but it can also display an image. We want to put Scroll Area into the Main Window: Let's open up Designer by double-clicking the imageviewer.ui. Also, in the header, we declared a pointer to the Ui::ImageViewer as a private member, ui. Note that we have a namespace UI, and our ImageViewer is under the UI scope. GreaterThan(QT_MAJOR_VERSION, 4): QT += widgetsįrom the highlight line, we have an incident of the ImageViewer class.Įxplicit ImageViewer(QWidget *parent = 0) Let's open up imageviewer.pro, add a line to support print: Applications->Qt Gui Application->Choose.

Imageviewer github