Question

如何将（自动滚动）垂直滚动条放在@Override public View getView(int position, View convertView, ViewGroup parent) { ViewHolder2 tvholder; ViewHolder ivholder; LayoutInflater inflater =(LayoutInflater) getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE); if (convertView == null) { switch (getItemViewType(position)) { case 0: convertView = inflater.inflate(R.layout.textcell, null); tvholder = new ViewHolder2(convertView); tvholder.TV.setText(getItem(position).getText()); convertView.setTag(tvholder); break; case 1: convertView = inflater.inflate(R.layout.imagecell, null); ivholder = new ViewHolder(convertView); ivholder.IV.setImageResource(getItem(position).getImage()); convertView.setTag(ivholder); break; } } else { switch (getItemViewType(position)) { case 0: tvholder = (ViewHolder2) convertView.getTag(); tvholder.TV.setText(getItem(position).getText()); break; case 1: ivholder = (ViewHolder) convertView.getTag(); ivholder.IV.setImageResource(getItem(position).getImage()); break; } } return convertView; }的左侧？

注意：我尝试修改文本框question的窗口样式，但它不起作用。

我尝试通过继承System.Windows.Forms.Panel并在ctor中进行pinvoking，在ctor中设置Panel，并通过覆盖CreateParams.Style getter来调整样式。不去。

Answer 1

如果您向控件添加WS_EX_LEFTSCROLLBAR扩展样式，则会在左侧显示滚动条：

using System.Windows.Forms;
public class ExPanel : Panel
{
    private const int WS_EX_LEFTSCROLLBAR = 0x00004000;
    protected override CreateParams CreateParams
    {
        get
        {
            var cp = base.CreateParams;
            cp.ExStyle = cp.ExStyle | WS_EX_LEFTSCROLLBAR;
            return cp;
        }
    }
}

C＃/ winforms面板左侧有垂直滚动条？

1 个答案: