【Qt开发】布局控件之间的间距设置

void QLayout::setContentsMargins ( int left, int top,
int right, int bottom )

Sets the left, top, right,
and bottom margins to use around the layout.

By default, QLayout uses the values provided by the style.
On most platforms, the margin is 11 pixels in all directions.

This function was introduced in Qt 4.3.

这个说默认有11像素的间隙。

测试不行。

//hlayout->setContentsMargins(0,0,0,0);

//hlayout->setContentsMargins(QMargins(0,0,0,0));

主要通过setMargin(0) 设置Layout 的外部边界为0

    hlayout->addWidget(start);

    hlayout->addWidget(settle);

    hlayout->addWidget(treatement);

    hlayout->addWidget(final);

    //hlayout->setStretchFactor(hlayout,0);

    hlayout->setMargin(0);

    //hlayout->setContentsMargins(0,0,0,0);

    //hlayout->setContentsMargins(QMargins(0,0,0,0));

    hlayout->setSpacing(0);

    //这个设置成功