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PyQt - QToolBar Widget
A QToolBar widget is a movable panel consisting of text buttons, buttons with icons or other widgets.
It is usually situated in a horizontal bar below menu bar, although it can be floating. Some useful methods of QToolBar class are as follows −
Sr.No. | Methods & Description |
---|---|
1 |
addAction() Adds tool buttons having text or icon |
2 |
addSeperator() Shows tool buttons in groups |
3 |
addWidget() Adds controls other than button in the toolbar |
4 |
addToolBar() QMainWindow class method adds a new toolbar |
5 |
setMovable() Toolbar becomes movable |
6 |
setOrientation() Toolbar’s orientation sets to Qt.Horizontal or Qt.vertical |
Whenever a button on the toolbar is clicked, ActionTriggered() signal is emitted. Additionally, it sends reference to QAction object associated with the event to the connected function.
A File toolbar is added in the toolbar area by calling addToolBar() method.
tb = self.addToolBar("File")
Although tool buttons with text captions can be added, a toolbar usually contains graphic buttons. A QAction object with an icon and name is added to the toolbar.
new = QAction(QIcon("new.bmp"),"new",self) tb.addAction(new)
Similarly, open and save buttons are added.
Finally, actionTriggered() signal is connected to a slot function toolbtnpressed()
tb.actionTriggered[QAction].connect(self.toolbtnpressed)
The complete code to execute the example is as follows −
import sys from PyQt4.QtCore import * from PyQt4.QtGui import * class tooldemo(QMainWindow): def __init__(self, parent = None): super(tooldemo, self).__init__(parent) layout = QVBoxLayout() tb = self.addToolBar("File") new = QAction(QIcon("new.bmp"),"new",self) tb.addAction(new) open = QAction(QIcon("open.bmp"),"open",self) tb.addAction(open) save = QAction(QIcon("save.bmp"),"save",self) tb.addAction(save) tb.actionTriggered[QAction].connect(self.toolbtnpressed) self.setLayout(layout) self.setWindowTitle("toolbar demo") def toolbtnpressed(self,a): print "pressed tool button is",a.text() def main(): app = QApplication(sys.argv) ex = tooldemo() ex.show() sys.exit(app.exec_()) if __name__ == '__main__': main()
The above code produces the following output −