Qt jpg image display

Question

I want to display  jpg image in an Qt UI  I checked it online and found http   qt-project org doc qt-4 8 widgets-imageviewer html  I thought Graphics View will do the same  and also it has codec to display video  How to display images using Graphics View  I went through the libraries  but because I am a totally newbie in Qt  I can t find a clue to start with  Can you direct me to some resources examples on how to load and display images in Qt   Thanks

User · Answer

Add Label  a QLabel  to the dialog where you want to show the image  This QLabel will actually display the image  Resize it to the size you want the image to appear   Add the image to your resources in your project  Now go into QLabel properties and select the image you added to resources for pixmap property  Make sure to check the next property scaledContents to shrink the image in the size you want to see it    That s all  the image will now show up

User · Answer

I understand your frustration the   Graphics view widget  is not the best way to do this  yes it can be done  but it s almost exactly the same as using a label   for what you want any way  now all the ways listed do work but     For you and any one else that may come across this question he easiest way to do it   what you re asking any way   is this    QPixmap pix  Path  path  entername jpeg        ui- gt label- gt setPixmap pix

User · Answer

include      int main int argc  char  argv          QApplication a argc  argv       QGraphicsScene scene      QGraphicsView view  amp scene       QGraphicsPixmapItem item QPixmap  c   test png         scene addItem  amp item       view show        return a exec        This should work     List of supported formats can be found here

User · Answer

You could attach the image  as a pixmap  to a label then add that to your layout          QPixmap image  blah jpg     QLabel  imageLabel   new QLabel    imageLabel- gt setPixmap image    mainLayout addWidget imageLabel          Apologies  this is using Jambi  Qt for Java  so the syntax is different  but the theory is the same

User · Answer

If the only thing you want to do is drop in an image onto a widget withouth the complexity of the graphics API  you can also just create a new QWidget and set the background with StyleSheets  Something like this    MainWindow  MainWindow QWidget  parent    QMainWindow parent                QWidget  pic   new QWidget this       pic- setStyleSheet  background-image  url test png         pic- setGeometry QRect 50 50 128 128

User · Answer

I want to display  jpg image in an Qt UI   The simpliest way is to use QLabel for this   int main int argc  char  argv          QApplication a argc  argv       QLabel label   lt img src  image jpg    gt         label show        return a exec

User · Answer

Using QPainter and QImage to paint on a window-widget  QMainWindow   just another method   class MainWindow   public QMainWindow           public          MainWindow        protected          void paintEvent QPaintEvent  event  override       protected          QImage image   QImage   path to image jpg           for convenience resize window to image size MainWindow  MainWindow         setMinimumSize image size        void MainWindow  paintEvent QPaintEvent  event        QPainter painter this       QRect rect   event- gt rect        painter drawImage rect  image  rect       int main int argc  char   argv        QApplication a argc  argv        MainWindow mainWindow      mainWindow show        return a exec

[image] Qt jpg image display

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