CODEWITHSUNDEEP
buttonclickpyqtsave
M. Johnson
M. Johnson

Reputation: 839

how to create click of button in PYQT

I've been having some trouble with create click of buttons in PyQT. when i create click of button as below , this picture can't save 

        cv.SetImageROI(image, (pt1[0],pt1[1],pt2[0] - pt1[0],int((pt2[1] - pt1[1]) * 1)))
        if self.Button.click():
            cv.SaveImage('example.jpg', image)

    cv.ResetImageROI(image)

Upvotes: 3

Views: 25432

Answers (1)

Alvaro Fuentes
Alvaro Fuentes

Reputation: 17455

The problem in your code is that you are performing a programmatic click on the button calling QPushButton.click on the line if self.Button.click():, what you need to do is to connect the signal QPushButton.clicked to a proper slot on your code. Singals and Slots is the way Qt handle some significant events that may occur on the object. Here I'll drop you an example, hope it helps:

import PyQt4.QtGui as gui

#handler for the signal aka slot
def onClick(checked):
    print checked #<- only used if the button is checkeable
    print 'clicked'

app = gui.QApplication([])

button = gui.QPushButton()
button.setText('Click me!')

#connect the signal 'clicked' to the slot 'onClick'
button.clicked.connect(onClick)

#perform a programmatic click
button.click()

button.show()
app.exec_()

Note: To understand the underlying behavior read the docs of Qt/PyQt.

Upvotes: 8

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