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POHow to avoid mouse click on one widget triggering the signals in others in Qt?
 

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  1. POHow to avoid mouse click on one widget triggering the signals in others in Qt?
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    <p>In my app I'm using a QTableView to show a list of images and I select some of the images by clicking left mouse button and pressing control keyboard button when I do so the app looks as the below stated image:<img src="https://i.stack.imgur.com/PziMc.png" alt="enter image description here"></p> <p>But then when I try to use other buttons on the app like <strong>"Destination"</strong> and then try to select a destination folder then the app looks like this below: <img src="https://i.stack.imgur.com/NBYLX.png" alt="enter image description here"></p> <p>Problem occurs when I click the <strong>"select folder"</strong> button and try to select the folder. What happens is that click on the folder selection tab, triggers QTableView widget in which I show the image and the deselects all the selected images. I want to avoid it. The way I now track the left mouse button clicks on QTableView widget is as below:</p> <pre><code>bool MainWindow::eventFilter(QObject* obj, QEvent *ev) { if(obj == ui-&gt;listOfImages-&gt;viewport()) { QMouseEvent * mouseEv = static_cast&lt;QMouseEvent*&gt;(ev); if((mouseEv-&gt;buttons() &amp; Qt::LeftButton) &amp;&amp; (QApplication::keyboardModifiers().testFlag(Qt::ControlModifier) == true)) { controlButtonCounter++; fetch = true; return QObject::eventFilter(obj,ev); } else if((mouseEv-&gt;buttons() &amp; Qt::LeftButton) &amp;&amp; (QApplication::keyboardModifiers().testFlag(Qt::ControlModifier) == false)) { if(selectedImages.size()&gt;0) { ui-&gt;listOfImages-&gt;clearSelection(); selectedImages.clear(); } fetch = false; controlButtonCounter = 0; } } return QObject::eventFilter(obj,ev); } </code></pre> <p>Here <code>ui-&gt;listOfImages</code> is the QTableView widget. Other things like <code>controlButtonCounter</code> are irrelevant in taking the mouse clicks, I use it for other purposes. </p> <p>Please say me how I can avoid triggering QTableView widget when I'm pressing on other things that fall in the same region as the QTableView.</p>
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