Qt学习笔记（一）布局管理器

#include 
#include 
#include 
#include 
#include 
#include 
#include 

int main(int argc, char *argv[])
{
	QApplication a(argc, argv);
	QLabel *infoLabel = new QLabel;
	QLabel *cmdLabel = new QLabel;
	QLineEdit *cmdLineEdit = new QLineEdit;

	QPushButton *submitButton = new QPushButton;
	QPushButton *cancelButton = new QPushButton;
	QPushButton *browserButton = new QPushButton;

	infoLabel->setText("Please input command in lineedit");
	cmdLabel->setText("Open:");

	cmdLineEdit->clear();
	submitButton->setText("Submit");
	cancelButton->setText("Cancel");
	browserButton->setText("Browser");

	QHBoxLayout *cmdLayout = new QHBoxLayout;
	cmdLayout->addWidget(cmdLabel);
	cmdLayout->addWidget(cmdLineEdit);

	QHBoxLayout *buttonLayout = new QHBoxLayout;
	buttonLayout->addWidget(submitButton);
	buttonLayout->addWidget(cancelButton);
	buttonLayout->addWidget(browserButton);

	QVBoxLayout *mainLayout = new QVBoxLayout;
	mainLayout->addWidget(infoLabel);//部件
	mainLayout->addLayout(cmdLayout);//布局
	mainLayout->addLayout(buttonLayout);//布局

	QWidget *window = new QWidget; //创建一个主窗口
	window->setLayout(mainLayout);//把总布局添加到窗口部件中，应用总布局
	window->setWindowTitle("Running...");
	window->show();
	/*mmm w;
	w.show();*/
	return a.exec();
}