Reinitializing the Qt Stylesheet seems to have no effect

Question

Reinitializing the Qt Stylesheet seems to have no effect

Attempting to modify the style of a window and all its children using stylesheets.

Each child is given a name using setObjectName, and the stylesheet uses these names to modify the style of the named widgets, along with a few exceptions. To achieve this, I create a map in C++, mapping names like QWidget#hello!hover to key-value pairs such as background-color to #0f0f0f. For example,

["QWidget#hello!hover"]["background-color"] = "#0f0f0f"

represents one entry.

After changing the stylesheet map, I recalculate the entire stylesheet and apply it via

setStyleSheet</code on the main widget. I add <code>/* */

at the top to trigger a recalculation, but it doesn't seem to work as expected.

While this method works in the constructor of the main widget, it doesn't take effect after the initial setup.

The calculated stylesheet is valid, and all entries are in the expected order. Since it works initially, the issue may be that the new stylesheet is not being applied or has no effect on the children.

I am using Qt 5.4 on Windows 10. How can I resolve this issue?

c++css qt

Answer 1

Answer №1

By applying the stylesheet to all child elements of the primary widget, I was able to resolve the issue. After generating the updated stylesheet and saving it as a QString variable named stylesheet, I executed the following code:

QList<QWidget*> children = findChildren<QWidget*>(); 
for (QList<QWidget*>::iterator child = children.begin(); child != children.end(); ++child);
    (*child)->setStyleSheet(stylesheet);

This solution worked smoothly without any complications. Since the changes are infrequent and the window contains minimal elements, the performance impact of this approach is minimal -- I am confident that a more efficient method can be implemented.

Answer 2

By applying the stylesheet to all child elements of the primary widget, I was able to resolve the issue. After generating the updated stylesheet and saving it as a QString variable named stylesheet, I executed the following code:

QList<QWidget*> children = findChildren<QWidget*>(); 
for (QList<QWidget*>::iterator child = children.begin(); child != children.end(); ++child);
    (*child)->setStyleSheet(stylesheet);

This solution worked smoothly without any complications. Since the changes are infrequent and the window contains minimal elements, the performance impact of this approach is minimal -- I am confident that a more efficient method can be implemented.

Reinitializing the Qt Stylesheet seems to have no effect

Answer №1

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