如何在Windows Mobile 6.5中动态更改标签的高度

时间:2012-12-22 08:34:22

标签: windows-mobile compact-framework windows-mobile-6.5 windows-mobile-6

在我的应用程序中,我将从长度未知的服务器获取文本。有人可以提出如何改变标签高度的想法,这样如果大于标签的长度,文本就不会被切断。

2 个答案:

答案 0 :(得分:1)

使用Graphics.MeasureString。这是一个简化的例子:

public class MyForm : Form
{
    private string m_text;

    public string NewLabelText 
    { 
        get { return m_text; }
        set 
        {
             m_text = value;
             this.Refresh();
        }
    }

    protected override void OnPaint(PaintEventArgs e)
    {
        if (NewLabelText != null)
        {
            var size = e.Graphics.MeasureString(NewLabelText, label1.Font);
            label1.Width = (int)size.Width;
            label1.Height = (int)size.Height;
            label1.Text = NewLabelText;
            NewLabelText = null;
        }

        base.OnPaint(e);
    }
}

答案 1 :(得分:0)

使用问题采用的ctacke解决方案(标签的恒定宽度):

protected override void OnPaint(PaintEventArgs e)
{
    if (NewLabelText != null)
    {
        //get the width and height of the text
        var size = e.Graphics.MeasureString(NewLabelText, label1.Font);
        if(size.Width>label1.Width){
            //how many lines are needed to display the text
            int iLines = (int)(System.Math.Round((size.Width / label1.Width)+.5));
            //multiply with using the normal height of a one line text
            //label1.Height=iLines*label1.PreferredHeight; //preferredHeight not supported by CF
            label1.Height=(int)(iLines*size.Height*1.1); // add some gutter
        }
        label1.Text = NewLabelText;
        NewLabelText = null;
    }

    base.OnPaint(e);
}

我无法用CF测试。可能是PreferredHeight在CF中不可用,如果是,请改用label1.height。