扩展光标长度QLineEdit？

Question

我想使用普通的QLineEdit，并更改光标的形状。因此，像这样的子类：

class myLineEdit : public QLineEdit
{
    Q_OBJECT
signals:

public:
    explicit myLineEdit(QWidget * parent = 0)
    {

    }

protected:

};

并进行设置，使光标宽度达到几个像素，就像Linux终端一样。默认情况下，用于指示文本位置的光标非常细。

我假设我需要覆盖paintevent()中的某些内容？ paintevent中究竟要负责绘制默认值的单个像素闪烁线QLineEdit()？我在文档中找不到此信息。

Answer 1

使用Qproxy样式：

    <script src="https://ajax.aspnetcdn.com/ajax/jQuery/jquery-3.3.1.min.js"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery-validate/1.19.0/jquery.validate.js"></script>

    <form name="formval" class="form-horizontal col-md-8" method="post" action="">
        <div class="form-group">
            <label for="pr_amt" class="col-sm-4 control-label">Loan Amount</label>
            <div class="col-sm-8">
            <div class="input-group">
            <span class="input-group-addon">SAR</span>
            <input type="text" class="form-control input-sm" id="pr_amt" name="pr_amt" placeholder="Enter Loan Amount">
            </div>
            </div>
        </div>

        <div class="form-group">
            <label for="period" class="col-sm-4 control-label">Down Payment</label>
            <div class="col-sm-8">
            <input type="text" class="form-control input-sm" id="period" placeholder="(in Saudi Riyal)" name="period">
            </div>
        </div>

        <div class="form-group">
            <label for="time" class="col-sm-4 control-label">Loan Tenure</label>
            <div class="col-sm-8">
            <input type="text" class="form-control input-sm" id="time" placeholder="(in months)" name="time">
            </div>
        </div>
        <div class="form-group">
            <label for="int_rate" class="col-sm-4 control-label">Rate of Interest</label>
            <div class="col-sm-8">
            <div class="input-group">
            <input type="text" class="form-control input-sm" id="int_rate" name="int_rate">
            <span class="input-group-addon">%</span>
            </div>
            </div>
        </div>

        <div class="form-group">
            <label for="insurance_rate" class="col-sm-4 control-label">Inurance Rate</label>
            <div class="col-sm-8">
            <div class="input-group">
            <input type="text" class="form-control input-sm" id="insurance_rate" name="insurance_rate">
            <span class="input-group-addon">%</span>
            </div>
            </div>
        </div>

        <div class="form-group">
            <div class="col-sm-offset-4 col-sm-12">
            <button type="submit" name="calculate" value="Calculate" class="btn btn-primary">Calculate EMI</button>
            <button type="reset" class="btn btn-link">Reset All</button>
            </div>
        </div>

    </form>