user120900: I already try changeing the height and width parameters of the forms in src/qt/forms but nothing changes, where else i need to look?

user-1: 
Open one of the .ui files from /src/qt/forms in Qt Designer



Press CTRL+O or click on [Form] -> [Break Layout]

Resize the form and different objects accordingly




Compile and run bitcoin-qt



I changed width and height in minimumSize property and same in geometry. Also made few changes in rpcconsole.cpp because I removed some objects, its not related to resizing the forms.

120900: <p>I already try changeing the height and width parameters of the forms in src/qt/forms but nothing changes, where else i need to look?</p>
 -1: <ol>
<li>Open one of the <code>.ui</code> files from <a href="https://github.com/bitcoin-core/gui/tree/master/src/qt/forms" rel="nofollow noreferrer">/src/qt/forms</a> in <a href="https://doc.qt.io/qt-5/qtdesigner-manual.html" rel="nofollow noreferrer">Qt Designer</a></li>
</ol>
<p><a href="https://i.stack.imgur.com/DxqoQ.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/DxqoQ.png" alt="qt-designer-1" /></a></p>
<ol start="2">
<li><p>Press CTRL+O or click on [Form] -&gt; [Break Layout]</p>
</li>
<li><p>Resize the form and different objects accordingly</p>
</li>
</ol>
<p><a href="https://i.stack.imgur.com/44ivA.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/44ivA.png" alt="resize-qt-designer" /></a></p>
<ol start="4">
<li>Compile and run <code>bitcoin-qt</code></li>
</ol>
<p><a href="https://i.stack.imgur.com/ff6Iu.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/ff6Iu.png" alt="resized-ui-1" /></a></p>
<p><a href="https://i.stack.imgur.com/RPo59.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/RPo59.png" alt="resized-ui-2" /></a></p>
<p>I changed width and height in <code>minimumSize</code> property and same in <code>geometry</code>. Also made few changes in <a href="https://github.com/bitcoin/bitcoin/blob/master/src/qt/rpcconsole.cpp" rel="nofollow noreferrer"><code>rpcconsole.cpp</code></a> because I removed some objects, its not related to resizing the forms.</p>
