#include "mainwindow.h" #include <QApplication> #include <QtGui> #include "qwidget.h" #include "qgridlayout.h" #include "qpushbutton.h" //qt layout例子，qt layout用法，qt qgridlayout demo //編譯環境：qt5.5，mingGW，windows 7 旗艦版，x64 //建一個沒有ui的qt工程，最簡單的qt工程，把下面代碼拷貝到main.c里面編譯及可通過 int main(int argc, char *argv[]) {QApplication app(argc, argv);QMainWindow *window = new QMainWindow();window->setWindowTitle(QString::fromUtf8("QGridLayout Col and Row Span"));window->resize(330, 220);QWidget *centralWidget = new QWidget(window);QGridLayout *layout = new QGridLayout();centralWidget->setLayout(layout);//qt添加控件方法，qt窗口添加按鈕，qt添加按鈕，qt添加layout//ROW 1//Add Items to QGridLayout Here//Row and Column counts are set Automaticallylayout->addWidget(new QPushButton("Button 1"),0,0);layout->addWidget(new QPushButton("Button 2"),0,1);layout->addWidget(new QPushButton("Button 3"),0,2);layout->addWidget(new QPushButton("Button 4"),0,3); //qt控件添加，Qt gridlayout合并，widget添加按鈕，widget添加按鍵//ROW 2layout->addWidget(new QPushButton("Button 5"),1,0);//set Row and Col Span of "Button 6" to 2//Set SizePolicy of "Button 6" to Expanding for Both Directions//So that Row and Col Span can be seen clearlyQPushButton* button6 = new QPushButton("Button 6");//中間的按鈕6 button 6占領了框中間兩行兩列。變成一個大按鈕button6->setSizePolicy(QSizePolicy::Expanding,QSizePolicy::Expanding);layout->addWidget(button6,1,1,2,2);//前面量個1，表示第一行，和第一列，//qt的tab，layout計數都是0開始。第一行，合并的函數是2行，第一列，合并的列數是2列layout->addWidget(new QPushButton("Button 7"),1,3);//ROW 3layout->addWidget(new QPushButton("Button 8"),2,0);layout->addWidget(new QPushButton("Button 9"),2,3);//ROW 4layout->addWidget(new QPushButton("Button 10"),3,0);layout->addWidget(new QPushButton("Button 11"),3,1);layout->addWidget(new QPushButton("Button 12"),3,2);layout->addWidget(new QPushButton("Button 13"),3,3);window->setCentralWidget(centralWidget);window->show();return app.exec(); }

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