[英]How to set QPushButton size in QGridLayout in Qt
I am currently learning qt. 我正在学习qt。 And I am trying to build a small GUI program with 81
QPushButton
on it. 我正在尝试使用81
QPushButton
构建一个小型GUI程序。
I want to set those buttons to 9 rows and 9 cols. 我想将这些按钮设置为9行和9列。 The best way I can think to implement this layout is using
QGridLayout
. 我能想到实现这种布局的最好方法是使用
QGridLayout
。
This is how that looks like after running: 这是运行后的样子:
I tried many ways to change the buttons size, but the buttons size are still remain default. 我尝试了很多方法来更改按钮大小,但按钮大小仍然是默认值。
Here is my code: 这是我的代码:
void MainWindow::setButtons()
{
const QSize btnSize = QSize(50, 50);
for(int i = 0; i < 81; i++) {
btn[i] = new QPushButton(centralWidget);
btn[i]->setText(QString::number(i));
btn[i]->resize(btnSize);
}
QGridLayout *btnLayout = new QGridLayout(centralWidget);
for(int i = 0; i < 9; i++) {
for(int j = 0; j < 9; j++) {
btnLayout->addWidget(btn[j + i * 9], 0 + i, j);
btnLayout->setSpacing(0);
}
}
centralWidget->setLayout(btnLayout);
}
So what can I do to actually change the size of those buttons? 那么我该怎么做才能真正改变那些按钮的大小呢?
Thanks. 谢谢。
If you want to use a fixed size for your widgets you must use setFixedSize()
: 如果要为小部件使用固定大小,则必须使用
setFixedSize()
:
const QSize btnSize = QSize(50, 50);
for(int i = 0; i < 81; i++) {
btn[i] = new QPushButton(centralWidget);
btn[i]->setText(QString::number(i));
btn[i]->setFixedSize(btnSize);
}
QGridLayout *btnLayout = new QGridLayout(centralWidget);
for(int i = 0; i < 9; i++) {
for(int j = 0; j < 9; j++) {
btnLayout->addWidget(btn[j + i * 9], 0 + i, j);
btnLayout->setSpacing(0);
}
}
centralWidget->setLayout(btnLayout);
Output: 输出:
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