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Qt-do not select qwidget for the base class of the promoted widget

Source: Internet
Author: User
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Today, I accidentally discovered that when I upgraded the components from qwidget as the basic componentProgramIt will have no effect after running,

 

 

The three components on the left are QT standard qwidget, qpushbutton, and qframe.

The three on the right side are upgraded from the left side, and then the color is set through qss to distinguish

We can see that the upgraded qwidget in the upper right corner is invisible.

While the other two upgraded parts have the exterior effect.

 

Therefore, if you want to create custom components, try to avoid qwidget improvement.

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