How to set QWidget width?

Question

How to set QWidget width? I know setGeometry(QRect& rect) function to do that, but in that case I should use geometry() function to get former parameters of my QWidget, then I should increment the width and use setGeometry(..). Is there any direct way to that, say:

QWidget aa;
aa.setWidth(165); //something like this?

score 67 · Accepted Answer · edited Sep 10 '16 at 12:10

67

resize() might be better to use.

Example usage:

widget->resize(165, widget->height());

edited Sep 10 '16 at 12:10

sashoalm

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answered Jun 03 '10 at 14:42

JimDaniel

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If content is larger than the widget, widget won't resize. In that case put all content on top of a QScrollarea. Then It'll resize and you can see the scrolling bars. – Hareen Laks Apr 16 '20 at 03:29

score 15 · Answer 2 · answered Jul 30 '12 at 23:08

15

widget->resize(165, widget->height());

answered Jul 30 '12 at 23:08

Petrucio

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score 6 · Answer 3 · answered Jun 03 '10 at 14:46

6

QWidget reference.

Try examining all available "yyysize" methods (because there are different sizing policies for Qt widgets and you might need something special).

Basically, yes, it's resize(...).

answered Jun 03 '10 at 14:46

M. Williams

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Why are you linking to docs for 4.2? It's not critical here but 4.6 is the latest full release. – Troubadour Jun 03 '10 at 14:49
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better bump that to 5.7 :P – NirIzr Oct 27 '16 at 02:02

score 5 · Answer 4 · answered Oct 09 '17 at 12:56

5

If the width won't change afterwards, you can use setFixedWidth:

widget->setFixedWidth(165);

Similarly, to change the height without changing the width, there is setFixedHeight.

answered Oct 09 '17 at 12:56

Donald Duck

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Never use fixed width! For varius reselutions it will not work. – Tomas Jul 31 '20 at 14:54
And you can't change your size in the future. Bad answer. – Sep 24 '21 at 12:23

How to set QWidget width?

4 Answers4