Qt (QGis) 中动态布局例子

怼烎@ 2022-08-05 05:16 173阅读 0赞

## [Qt (QGis) 中动态布局例子][Qt _QGis_] ##

QHBoxLayout\* classLayout = new QHBoxLayout;  
QLabel \*label1 = new QLabel(tr("选择分类栅格图层:"));  
mInputClassCombo = new QComboBox(this);  
classLayout->addWidget(label1);  
classLayout->addWidget(mInputClassCombo);  
  
QHBoxLayout\* outputLayout = new QHBoxLayout;  
QLabel \*label2 = new QLabel(tr("输出文件:"));  
mOutputBuildingLineEdit = new QLineEdit(this);  
mOutputBrowseButton = new QPushButton(tr("..."), this);  
mOutputBrowseButton->setFixedWidth(15);  
outputLayout->addWidget(label2);  
outputLayout->addWidget(mOutputBuildingLineEdit);  
outputLayout->addWidget(mOutputBrowseButton);  
  
QGridLayout \*pixelLayout = new QGridLayout;  
pixelLayout->setAlignment(Qt::AlignHCenter);  
QLabel \*labelR = new QLabel(tr("R"));  
QLabel \*labelG = new QLabel(tr("G"));  
QLabel \*labelB = new QLabel(tr("B"));  
mPixel\_R\_LineEdit = new QLineEdit(this);  
mPixel\_G\_LineEdit = new QLineEdit(this);  
mPixel\_B\_LineEdit = new QLineEdit(this);  
pixelLayout->addWidget(labelR, 0, 0);  
pixelLayout->addWidget(mPixel\_R\_LineEdit, 1, 0);  
pixelLayout->addWidget(labelG, 0, 1);  
pixelLayout->addWidget(mPixel\_G\_LineEdit, 1, 1);  
pixelLayout->addWidget(labelB, 0, 2);  
pixelLayout->addWidget(mPixel\_B\_LineEdit, 1, 2);  
  
QHBoxLayout\* operationLayout = new QHBoxLayout;  
mAddButton = new QPushButton(tr("添加"), this);  
mRemoveButton = new QPushButton(tr("删除"), this);  
operationLayout->addWidget(mAddButton);  
operationLayout->addWidget(mRemoveButton);  
  
setupTable();  
  
QHBoxLayout\* executeLayout = new QHBoxLayout;  
mOkButton = new QPushButton(tr("确定"), this);  
mCancelButton = new QPushButton(tr("取消"), this);  
executeLayout->addWidget(mOkButton);  
executeLayout->addWidget(mCancelButton);  
  
QVBoxLayout \*mainLayout = new QVBoxLayout(this);  
mainLayout->addLayout(classLayout);  
mainLayout->addLayout(outputLayout);  
mainLayout->addLayout(pixelLayout);  
mainLayout->addLayout(operationLayout);  
mainLayout->addWidget(mTableWidget);  
mainLayout->addLayout(executeLayout);  
  
  
this->setLayout(mainLayout);  
  
QObject::connect(mInputClassCombo, SIGNAL(currentIndexChanged(int)), this, SLOT(on\_mInputClassCombo\_currentIndexChanged()));  
connect(mOutputBrowseButton, SIGNAL(clicked()), this, SLOT(on\_mOutputBrowseButton\_clicked()), Qt::UniqueConnection);  
connect(mAddButton, SIGNAL(clicked()), this, SLOT(on\_mAddButton\_clicked()), Qt::UniqueConnection);  
connect(mRemoveButton, SIGNAL(clicked()), this, SLOT(on\_mRemoveButton\_clicked()), Qt::UniqueConnection);  
connect(mCancelButton, SIGNAL(clicked()), this, SLOT(on\_mCancelButton\_clicked()), Qt::UniqueConnection);  
connect(mOkButton, SIGNAL(clicked()), this, SLOT(on\_mOkButton\_clicked()), Qt::UniqueConnection);

值得注意的是“QVBoxLayout \*mainLayout = new QVBoxLayout(this);” 为主布局控件，其它的布局控件和Widget控件放置在该控件中，初始化的时候不能用"this"，如

QHBoxLayout\* classLayout = new QHBoxLayout;

[Qt _QGis_]: http://www.cnblogs.com/loongfee/archive/2013/05/28/3103491.html