when I compile the codes which has database connection, there\'s an error like, QtSql: No such fil开发者_StackOverflow中文版e or directory
I have a gra开发者_运维技巧phicsview and a graphicsscen, but I don\'t know how to install and handle the event filter for getting the keyboard events. Can anyone help me with that?
I\'m wanting a paradigm in a Qt4 (PyQt4) program where a component is able to respond to a signal without knowing anything about where it is coming from.
I don\'t know how to connect two forms, I am able to open second form but cannot access the first form.
I am developing a Qt application and a Qt Plugin library. Everything is working fine as far as I use the debug mode.
I am trying to get the statusbar to update with the FPS of the contents of a QGLWidget. I have connected them as follows (In class MainWin):
Question: how to find sub item, in a QTreeView loaded QAbstractItemModel model with model->match() method?
I\'m trying to create a custom button, derived from \"QAbstractbutton\". I have overridden the paintEvent. However, my button is not visible i开发者_开发百科n my widget. What I see is that the paintEv
I want to render the contents of the window in to QWidget ( or QPixmap ) using XComposite and XRender.
How to set the color of margins in a QGridLayout? I want to show the different columns and rows separately by placing lines between 开发者_JAVA技巧various rows and columns.
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