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    <p>If I understood your question, you want the two QTableViews to resize to their PreferredSize if there is enough space (but no more than thier PreferredSize) and to shrink if there is not enough space. If there is too much space, it should be left empty. Here's an example that does it:</p> <pre><code>#include &lt;QtGui&gt; int main(int argc, char **argv) { QApplication app(argc, argv); QMainWindow w; QHBoxLayout *hbox = new QHBoxLayout; QWidget *centralw = new QWidget; centralw-&gt;setLayout(hbox); w.setCentralWidget(centralw); QTableView *t1 = new QTableView; QTableView *t2 = new QTableView; // Version one: the preferred size is the maximum size // t1-&gt;setSizePolicy(QSizePolicy(QSizePolicy::Maximum, QSizePolicy::Preferred)); // t2-&gt;setSizePolicy(QSizePolicy(QSizePolicy::Maximum, QSizePolicy::Preferred)); // Version two: the preferred size is the only accepted size // if you want the widgets not to change their size, change the two previous lines with // t1-&gt;setSizePolicy(QSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed)); // t2-&gt;setSizePolicy(QSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed)); // hbox-&gt;addWidget(t1); // hbox-&gt;addWidget(t2); // add a stretch that will fill empty space // hbox-&gt;addStretch(1); // Version three: tables have a minimum and maximum width. They can be shrunk // but they try to expand to take the maximum available space up to their maximum // width. t1-&gt;setMinimumWidth(150); t1-&gt;setMaximumWidth(400); t2-&gt;setMinimumWidth(100); t2-&gt;setMaximumWidth(200); t1-&gt;setSizePolicy(QSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding)); t2-&gt;setSizePolicy(QSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding)); hbox-&gt;addWidget(t1); hbox-&gt;addWidget(t2); hbox-&gt;setStretchFactor(t1, 1); hbox-&gt;setStretchFactor(t2, 1); // tableviews have the same stretch factor hbox-&gt;addStretch(0); // lowest stretch factor w.show(); return app.exec(); } </code></pre>
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    1. POLayout with two tableviews problem
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    1. COI've tried this but it doesn't work. The problem is, that even with enough space available the QTableView chooses to show horizontal scrollbar instead of growing. Is there any way to change this behaviour?
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    2. COYou can set the minimum and maximum widget width and use the Expanding QSizePolicy to make the widget use as much space as it can up to the maximum width. I'll edit the answer to show how to do that.
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    3. COThat did the trick, thanks a lot. I can take the width and height from horizontal / vertical header and have a dynamically resizing view.
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Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

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Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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