根据单选按钮为窗体的背景着色
本文关键字:背景 窗体 单选按钮 | 更新日期: 2023-09-27 18:30:56
我一直在努力让我的表单根据用户选择的选项立即更改背景颜色。他可以在红色,绿色和蓝色之间进行选择。我试图使用system.drawing.color,但我似乎无法使表单改变它的颜色。它应该使用委托。
我只是在学习无模式对话框。请帮忙...
到目前为止,这就是我所做的:
public partial class ChangeColors : Form
{
//Delegate the observer needs to notify if something changes
public delegate void ChangeColorEvent(Color nameColor);
// Name of the event which is tied to the delegate
public event ChangeColorEvent ChangeColor;
public enum color { Red, Green, Blue };
private color selectedColor;
public color SelectedColor
{
get
{
return selectedColor;
}
set
{
selectedColor = value;
}
}
public ChangeColors()
{
InitializeComponent();
selectedColor = color.Blue;
}
private void backColor_ColorChanged(Control control)
{
if (redRadioButton.Checked)
this.BackColor = System.Drawing.Color.Red;
else if (blueRadioButton.Checked)
this.BackColor = System.Drawing.Color.Blue;
else
this.BackColor = System.Drawing.Color.Green;
}
private void okButton_Click(object sender, EventArgs e)
{
this.Close();
}
}
我不知道
如何使用delgete执行此操作,但是使用事件是代码:
public partial class Form1 : Form
{
private void backColor_ColorChanged(object sender, EventArgs e)
{
if (redRadioButton.Checked)
this.BackColor = System.Drawing.Color.Red;
else if (blueRadioButton.Checked)
this.BackColor = System.Drawing.Color.Blue;
else if (greenRadioButton.Checked)
this.BackColor = System.Drawing.Color.Green;
}
public Form1()
{
InitializeComponent();
redRadioButton.CheckedChanged += new EventHandler(backColor_ColorChanged);
blueRadioButton.CheckedChanged += new EventHandler(backColor_ColorChanged);
greenRadioButton.CheckedChanged += new EventHandler(backColor_ColorChanged);
}
}