QLineEdit可见宽度设置？

Question

如何使用Qt 4.8.1及更高版本设置QLineEdit的可见宽度.示例是将可见宽度设置为某个像素大小或字符宽度.我希望只使用C++而不是QML.

我的想法是在这个块的方向:

QHBoxLayout *nameRow = new QHBoxLayout; 

QLineEdit   *firstNameText = new QLineEdit,
            *middleIntText = new QLineEdit,
            *lastNameText = new QLineEdit;
//Whatever method is needed here to edit visible width
//firstNameText->???
//middleIntText->???
//lastNameText->???

nameRow->addWidget(firstNameText);
nameRow->addWidget(middleIntText);
nameRow->addWidget(lastNameText);

layout->addLayout(nameRow);

QWidget window;
window.setLayout(layout);
window.show();

答案更新:(或见下文)

firstNameText->setMaximumWidth(100);
firstNameText->setFixedWidth(120);

middleIntText->setMaximumWidth(50);
middleIntText->setFixedWidth(60);

lastNameText->setMaximumWidth(100);
lastNameText->setFixedWidth(120);

Answer 1

firstNameText->setMaximumWidth(100);
firstNameText->setFixedWidth(120);

您可以使用这两个功能,他们将相应地调整宽度.