qt中textEdit设置文字大小
时间: 2024-04-16 09:28:14 浏览: 270
要在Qt中设置QTextEdit中文本的大小,您可以使用QTextCursor来操作光标并应用字体样式。
以下是一个示例代码,演示如何在QTextEdit中设置文本的大小:
```cpp
#include <QtWidgets>
int main(int argc, char *argv[])
{
QApplication app(argc, argv);
QTextEdit textEdit;
textEdit.setText("Hello World");
QTextCursor cursor = textEdit.textCursor();
QTextCharFormat format;
format.setFontPointSize(16); // 设置字体大小为16
cursor.select(QTextCursor::Document);
cursor.mergeCharFormat(format);
textEdit.setTextCursor(cursor);
textEdit.show();
return app.exec();
}
```
在上面的示例中,我们创建了一个QTextEdit部件,并将文本设置为"Hello World"。然后,我们使用QTextCursor来获取当前文本的光标,并创建一个QTextCharFormat对象。通过setFontPointSize()函数,我们将字体大小设置为16。接下来,我们使用select()函数选择整个文档,并使用mergeCharFormat()函数将格式应用于所选文本。最后,我们将修改后的光标设置回QTextEdit。
您可以根据需要调整字体的其他属性,如字体样式、粗细等。
希望这个示例能帮助到您!如有任何疑问,请随时提问。
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