General and Desktop

@Prmego np. please mark as solved if possible.

@SGaist Thank you! Right now I am just looking around yet... I will read the introduction and I will be back for sure :)

@VRonin said in Clearing a QTreeWidget in CustomContextMenuRequest causes crash: QTreeWidgetItem Thank you very much, that I did not see this. The changedModelSelection(QTreeWidgetItem* currentItem, QTreeWidgetItem* oldItem) which is called when a selection is changed in the tree wants to do an update, but as there are no objects left the currentItem is null and there for causes an exception when I want to do something with it. 4 days strugling for this, haha.

@Wieland i guess thats what he is already doing. He just wants the appearance to be different. @inforathinam the problem is that there is no easy way to do so. You can play around with QStyle's subelements to paint a progressbar of your desire. Use the sub elements QStyle::SE_ProgressBarGroove QStyle::SE_ProgressBarContents QStyle::SE_ProgressBarLabel QStyle::SE_ProgressBarLayoutItem for painting. For the painting of QStyle::SE_ProgressBarContents try to translate from left to right the painter and also set a clipping rect for it. You will have to do the animation also by yourself

@nxMan i haven't tried it, but you can try it ;) Use QStyleFactory to create an older Windows style and set it on the widget. QStyle * style = QStyleFactory::create("..."); //check QStyleFactory::keys() for possible values treeWidget->setStyle( style );

Ok. If anyone else ever encounters this issue, I found my own solution thanks to this article: https://forum.qt.io/topic/20117/error-lnk-2019-when-merging-qt-application-with-an-existing-mfc-application Even though it is using a different set of libraries the solution was the same: to remove the qtmain.lib that is automatically added as a linked dependency when using the Qt project wizard to create a Qt project in Visual Studio.

@Chris-Kawa I follow your instruction and succeed. But It's not so smart, I will spend some time to read QT Source, and find out how the QLabel class being designed. I manually add height and font point size to the ShapedTag, and the function setText will calculate the widget width, and at last in funtion minimumSizeHint return the QSize I have calculated.

@mrjj : Thank you! Problem solved...the build process was the problem. It did not rebuild because of date-issues :-)

@Eugene404 almost :) in the definition default parameters are not allowed. But yes, the missing pointer was what i meant.

@Tim-Webster QtCreator prepares the environment before starting your app, this can have some effects. You really should set timeout to some value and check what happens (stderr and stdout output) and connect error signal to a slot.

https://mayaposch.wordpress.com/2011/11/01/how-to-really-truly-use-qthreads-the-full-explanation/

Good to know, thanks !

You'll have to manage that yourself. IIRC you can find several solutions on this forum for that. Looks for Qt widget aspect ratio or maybe take the Flow Layout example as inspiration to manage that particular widget.

Hi and welcome to devnet, If you want to use the OpenSource version, then there's no need to login. Just skip that part and continue with installation.

Hi, Run the qmake command from where you want to generate the project file. For example, If you want to create the project file inside the "vs2005dir", access the folder through command line and run qmake from there. qmake <relevant arguments> ../project.pro Regards, San