How to set different size of layouts in Qt?

[And92]

I put on the central widget QHBoxLayout in Qt Designer. Then I put 2 QVBoxLayout's in this QHBoxLayout. They occupy the space of equal width, as can be seen in the Picture.

The question is: how to make them of different width? For example, 1:3 (left QVBoxLayout width : right QVBoxLayout width).
And how to make it in Qt Designer and from the source code?
What is layoutStretch field on the right bottom of the picture and how to use it?
Could You, please, give some code example.

[Bonnie]

@And92
If you click on the horizonLayout, The layoutStretch should be "0, 0".
You can set it to "1, 3".

[jsulm]

@And92 There is layoutStretch property for that

[And92]

How to use it? It doesn not work in my Qt Designer, or I do not understand something. Have not found any proper explanation on the Internet yet. Could You, please, give any link? And how to do it from the code?

[Bonnie]

@And92
If you click on the horizonLayout, The layoutStretch should be "0, 0".
You can set it to "1, 3".

[jsulm]

@And92 Well, select the layout containing your vertical layouts and in that layout change layoutStretch (for example to 1,2).

[JonB]

@And92 said in How to set different size of layouts in Qt?:

Could You, please, give any link? And how to do it from the code?

Start from https://doc.qt.io/qt-5/qboxlayout.html#setStretch, and other references to stretch on that page and elsewhere, like https://doc.qt.io/qt-5/layout.html#stretch-factors. Also, once you have set layoutStretch in the Designer, you can look in the uic-generated code (ui_*.h files) to see what statements that is producing at run-time.

[And92]

Thank You very much, @Bonnie and @jsulm, I got the idea. It is simple. My error was that i tried to set layoutStretch property in both of QVBoxLayout, but should modify the layoutStretch property of the QHBoxLayout layout, containing them.
@JonB, I have alredy seen these links. But there are no code examples illustrating how to use those functions.
Unfortunately, I do not know how to mark the answer as a solution here.

[jsulm]

@And92 Click on the 3 dots icon in bottom right of the post and then "Mark this post as correct answer".

[JonB]

@And92 said in How to set different size of layouts in Qt?:

@JonB, I have alredy seen these links. But there are no code examples illustrating how to use those functions.

https://doc.qt.io/qt-5/qtwidgets-layouts-basiclayouts-example.html
http://zetcode.com/gui/qt5/layoutmanagement/

Sorry, but I didn't write the Qt docs :), that's what I could spot.

[And92]

@JonB, sorry. Thank You for Your support. It was helpful.