C#实现WORD颜色下拉框控件全过程
2007-11-29 21:53
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一、 设计一个弹出窗口基类。
1、通过继承窗体类创建基类。
public class ColorCommonForm : System.Windows.Forms.Form
2、创建虚拟方法Show来指定窗体位置。
/**//// <summary>
/// 自己定义的show
/// </summary>
/// <param name="Ctl">要在那个控件附近show 出本窗口</param>
public virtual void Show(Control Ctl)
...{
Rectangle rect = Ctl.RectangleToScreen(new Rectangle(0, 0, Ctl.Width, Ctl.Height));
this.Left = rect.Left;
this.Top = rect.Top + Ctl.Height;
Rectangle ScreenRect = Screen.PrimaryScreen.WorkingArea;
if (this.Right > ScreenRect.Width || this.Bottom > ScreenRect.Height)
...{
this.Left = rect.Left - this.Width + Ctl.Width;
this.Top = rect.Top - this.Height;
}
this.Show();
}
3、重写WndProc（窗体消息）
/**//// <summary>
/// 重写 WndProc
/// </summary>
/// <param name="m"></param>
protected override void WndProc(ref Message m)
...{
//如果整个程序失去就隐藏
if (m.Msg == SystemShell.WM_ACTIVATEAPP && m.WParam == IntPtr.Zero)
...{
this.Hide();
}
base.WndProc(ref m);
}
二、设计颜色弹出窗口，并把颜色绘制到窗口上。
1、定义需要绘制到窗体的颜色。
private static string[] colorList =
...{
"#000000","#973302","#343200","#013300","#003466","#000083","#313398","#333333","#810004",
"#FD6802","#858200","#008002","#008081","#0201FF","#69669D","#80807E","#FE0002","#FE9B00",
"#9ACB00","#339A65","#33CBCC","#3C62FF","#780179","#99999B","#FF00FE","#FFCB03","#FFFE01",
"#00FF01","#01FFFF","#00CCFF","#993365","#C0C0C0","#FF99CB","#FFCA9B","#FFFE99","#CDFFCC",
"#CDFFFF","#99CDFD","#C89CFB","#FFFFFF"
};
2、绘制颜色到窗体的画布
private void pictureBox1_Paint(object sender, PaintEventArgs e)
...{
int x = 5, y = 5, count = 1;
using (SolidBrush MyBrush1 = new SolidBrush(Color.Black))
...{
Rectangle r1 = new Rectangle(x, y, 130, 12);
e.Graphics.DrawRectangle(new Pen(Color.FromArgb(172, 168, 153)), x, y, 12, 12);
e.Graphics.FillRectangle(MyBrush1, x, y, 12, 12);
Point p = new Point(x + 50, y - 1);
Font drawFont = new Font("Arial", 8);
e.Graphics.DrawString("自动", drawFont, MyBrush1, p);
y += 20;
for (int i = 0; i < colorList.Length; i++)
...{
if (count < 8)
...{
SolidBrush MyBrush = new SolidBrush(ColorTranslator.FromHtml(colorList[i].ToString()));
e.Graphics.DrawRectangle(new Pen(Color.FromArgb(172, 168, 153)), x, y, 12, 12);
Rectangle r = new Rectangle(x, y, 12, 12);
count = i + 1;
allRec.SetValue(r, i);
e.Graphics.FillRectangle(MyBrush, x, y, 12, 12);
x += 17;
}
else
...{
int row = count / 8 + 1; //
if (count % 8 == 0)
...{
x = 5;
if (row == 0)
...{
y = 43;
}
else
...{
y = 17 * row + 8;
}
}
SolidBrush MyBrush = new SolidBrush(ColorTranslator.FromHtml(colorList[i].ToString()));
Rectangle r = new Rectangle(x, y, 12, 12);
e.Graphics.DrawRectangle(new Pen(Color.FromArgb(172, 168, 153)), r);
count = i + 1;
allRec.SetValue(r, i);
e.Graphics.FillRectangle(MyBrush, x, y, 12, 12);
x += 17;
}
}
allRec.SetValue(r1, 40);
}
}
3、定义鼠标移动选择颜色（移动到颜色上产生提示）
/**//// 如果鼠标进入 (更多) 的范围将label1背景改变
private void ColorSelectForm_MouseMove(object sender, MouseEventArgs e)
...{
Point pt = Control.MousePosition;
Color cl = Color.FromArgb(247, 246, 241);
if (!(pt.X > this.Right || pt.X < this.Left || pt.Y > this.Bottom || pt.Y < this.Top))
...{
Rectangle rect = label1.RectangleToScreen(new Rectangle(0, 0, label1.Width, label1.Height));
if (!(pt.X > rect.Right || pt.X < rect.X || pt.Y > rect.Bottom || pt.Y < rect.Y))
...{
cl = Color.FromArgb(214, 238, 252);
}
else
...{
using (Graphics g = this.pictureBox1.CreateGraphics())
...{
Point p = new Point(e.X, e.Y);
for (int i = 0; i < allRec.Length; i++)
...{
if (allRec[i].Contains(p))
...{
this.pictureBox1.Cursor = Cursors.Arrow;
if (i == 40)
...{
tempColor = ColorTranslator.FromHtml("#000000");
}
else
...{
tempColor = ColorTranslator.FromHtml(colorList[i]);
}
g.DrawRectangle(pen, allRec[i]);
return;
}
else
...{
if (i != 40)
...{
g.DrawRectangle(new Pen(Color.FromArgb(172, 168, 153)), allRec[i]);
}
else
...{
g.DrawRectangle(new Pen(Color.FromArgb(246, 246, 246)), 5, 5, 130, 12);
}
}
}
}
}
}
label1.BackColor = cl;
}
4、鼠标按下选择颜色事件
/**//// 如果鼠标按下进行一系列处理
private void ColorSelectForm_MouseDown(object sender, MouseEventArgs e)
...{
this.Capture = false; //释放鼠标
Point pt = Control.MousePosition;
Color cl = Color.Empty;
while (true)
...{
if (!(pt.X > this.Right || pt.X < this.Left || pt.Y > this.Bottom || pt.Y < this.Top))//是否在窗口范围内
...{
Rectangle rect = label1.RectangleToScreen(new Rectangle(0, 0, label1.Width, label1.Height));
if (!(pt.X > rect.Right || pt.X < rect.X || pt.Y > rect.Bottom || pt.Y < rect.Y))//如果鼠标点击在(更多)上弹出 colorDialog1
...{
if (colorDialog1.ShowDialog() == DialogResult.OK)
...{
cl = colorDialog1.Color;
}
break;
}
rect = pictureBox1.RectangleToScreen(new Rectangle(0, 0, pictureBox1.Width, pictureBox1.Height));
if (!(pt.X > rect.Right || pt.X < rect.X || pt.Y > rect.Bottom || pt.Y < rect.Y))//判断鼠标是否点击到了 pictureBox1
...{
if (this.Cursor == Cursors.Arrow)
...{
cl = tempColor;
}
}
}
break;
}
if (SelectColor != null && cl != Color.Empty)
...{
SelectColor(cl);
}
this.Dispose();
}
三、通过继承ComboBox设计类似WORD下拉选框。
1、构造颜色下拉控件
this.Cursor = Cursors.Hand;
this.ItemHeight = 16;
this.BackColor = System.Drawing.Color.Green;
this.DropDownHeight = 1;
this.DropDownWidth = 1;
this.DrawMode = DrawMode.OwnerDrawFixed; //指定控件元素为自定义绘制
2、定义控件的单击事件,弹出颜色框
protected override void OnClick(EventArgs e)
...{
ColorBoxForm a = new ColorBoxForm();
a.SelectColor += new ColorBoxForm.MouseSelectColor(ColorForm_SelectColor); //代码中省略了命名空间
a.Show(this);
base.OnClick(e);
}
3、自定义绘制下拉元素（可省略）
protected override void OnDrawItem(DrawItemEventArgs e)
...{
base.OnDrawItem(e);
}
以上控件制作完成，得到效果如下：
1、通过继承窗体类创建基类。
public class ColorCommonForm : System.Windows.Forms.Form
2、创建虚拟方法Show来指定窗体位置。
/**//// <summary>
/// 自己定义的show
/// </summary>
/// <param name="Ctl">要在那个控件附近show 出本窗口</param>
public virtual void Show(Control Ctl)
...{
Rectangle rect = Ctl.RectangleToScreen(new Rectangle(0, 0, Ctl.Width, Ctl.Height));
this.Left = rect.Left;
this.Top = rect.Top + Ctl.Height;
Rectangle ScreenRect = Screen.PrimaryScreen.WorkingArea;
if (this.Right > ScreenRect.Width || this.Bottom > ScreenRect.Height)
...{
this.Left = rect.Left - this.Width + Ctl.Width;
this.Top = rect.Top - this.Height;
}
this.Show();
}
3、重写WndProc（窗体消息）
/**//// <summary>
/// 重写 WndProc
/// </summary>
/// <param name="m"></param>
protected override void WndProc(ref Message m)
...{
//如果整个程序失去就隐藏
if (m.Msg == SystemShell.WM_ACTIVATEAPP && m.WParam == IntPtr.Zero)
...{
this.Hide();
}
base.WndProc(ref m);
}
二、设计颜色弹出窗口，并把颜色绘制到窗口上。
1、定义需要绘制到窗体的颜色。
private static string[] colorList =
...{
"#000000","#973302","#343200","#013300","#003466","#000083","#313398","#333333","#810004",
"#FD6802","#858200","#008002","#008081","#0201FF","#69669D","#80807E","#FE0002","#FE9B00",
"#9ACB00","#339A65","#33CBCC","#3C62FF","#780179","#99999B","#FF00FE","#FFCB03","#FFFE01",
"#00FF01","#01FFFF","#00CCFF","#993365","#C0C0C0","#FF99CB","#FFCA9B","#FFFE99","#CDFFCC",
"#CDFFFF","#99CDFD","#C89CFB","#FFFFFF"
};
2、绘制颜色到窗体的画布
private void pictureBox1_Paint(object sender, PaintEventArgs e)
...{
int x = 5, y = 5, count = 1;
using (SolidBrush MyBrush1 = new SolidBrush(Color.Black))
...{
Rectangle r1 = new Rectangle(x, y, 130, 12);
e.Graphics.DrawRectangle(new Pen(Color.FromArgb(172, 168, 153)), x, y, 12, 12);
e.Graphics.FillRectangle(MyBrush1, x, y, 12, 12);
Point p = new Point(x + 50, y - 1);
Font drawFont = new Font("Arial", 8);
e.Graphics.DrawString("自动", drawFont, MyBrush1, p);
y += 20;
for (int i = 0; i < colorList.Length; i++)
...{
if (count < 8)
...{
SolidBrush MyBrush = new SolidBrush(ColorTranslator.FromHtml(colorList[i].ToString()));
e.Graphics.DrawRectangle(new Pen(Color.FromArgb(172, 168, 153)), x, y, 12, 12);
Rectangle r = new Rectangle(x, y, 12, 12);
count = i + 1;
allRec.SetValue(r, i);
e.Graphics.FillRectangle(MyBrush, x, y, 12, 12);
x += 17;
}
else
...{
int row = count / 8 + 1; //
if (count % 8 == 0)
...{
x = 5;
if (row == 0)
...{
y = 43;
}
else
...{
y = 17 * row + 8;
}
}
SolidBrush MyBrush = new SolidBrush(ColorTranslator.FromHtml(colorList[i].ToString()));
Rectangle r = new Rectangle(x, y, 12, 12);
e.Graphics.DrawRectangle(new Pen(Color.FromArgb(172, 168, 153)), r);
count = i + 1;
allRec.SetValue(r, i);
e.Graphics.FillRectangle(MyBrush, x, y, 12, 12);
x += 17;
}
}
allRec.SetValue(r1, 40);
}
}
3、定义鼠标移动选择颜色（移动到颜色上产生提示）
/**//// 如果鼠标进入 (更多) 的范围将label1背景改变
private void ColorSelectForm_MouseMove(object sender, MouseEventArgs e)
...{
Point pt = Control.MousePosition;
Color cl = Color.FromArgb(247, 246, 241);
if (!(pt.X > this.Right || pt.X < this.Left || pt.Y > this.Bottom || pt.Y < this.Top))
...{
Rectangle rect = label1.RectangleToScreen(new Rectangle(0, 0, label1.Width, label1.Height));
if (!(pt.X > rect.Right || pt.X < rect.X || pt.Y > rect.Bottom || pt.Y < rect.Y))
...{
cl = Color.FromArgb(214, 238, 252);
}
else
...{
using (Graphics g = this.pictureBox1.CreateGraphics())
...{
Point p = new Point(e.X, e.Y);
for (int i = 0; i < allRec.Length; i++)
...{
if (allRec[i].Contains(p))
...{
this.pictureBox1.Cursor = Cursors.Arrow;
if (i == 40)
...{
tempColor = ColorTranslator.FromHtml("#000000");
}
else
...{
tempColor = ColorTranslator.FromHtml(colorList[i]);
}
g.DrawRectangle(pen, allRec[i]);
return;
}
else
...{
if (i != 40)
...{
g.DrawRectangle(new Pen(Color.FromArgb(172, 168, 153)), allRec[i]);
}
else
...{
g.DrawRectangle(new Pen(Color.FromArgb(246, 246, 246)), 5, 5, 130, 12);
}
}
}
}
}
}
label1.BackColor = cl;
}
4、鼠标按下选择颜色事件
/**//// 如果鼠标按下进行一系列处理
private void ColorSelectForm_MouseDown(object sender, MouseEventArgs e)
...{
this.Capture = false; //释放鼠标
Point pt = Control.MousePosition;
Color cl = Color.Empty;
while (true)
...{
if (!(pt.X > this.Right || pt.X < this.Left || pt.Y > this.Bottom || pt.Y < this.Top))//是否在窗口范围内
...{
Rectangle rect = label1.RectangleToScreen(new Rectangle(0, 0, label1.Width, label1.Height));
if (!(pt.X > rect.Right || pt.X < rect.X || pt.Y > rect.Bottom || pt.Y < rect.Y))//如果鼠标点击在(更多)上弹出 colorDialog1
...{
if (colorDialog1.ShowDialog() == DialogResult.OK)
...{
cl = colorDialog1.Color;
}
break;
}
rect = pictureBox1.RectangleToScreen(new Rectangle(0, 0, pictureBox1.Width, pictureBox1.Height));
if (!(pt.X > rect.Right || pt.X < rect.X || pt.Y > rect.Bottom || pt.Y < rect.Y))//判断鼠标是否点击到了 pictureBox1
...{
if (this.Cursor == Cursors.Arrow)
...{
cl = tempColor;
}
}
}
break;
}
if (SelectColor != null && cl != Color.Empty)
...{
SelectColor(cl);
}
this.Dispose();
}
三、通过继承ComboBox设计类似WORD下拉选框。
1、构造颜色下拉控件
this.Cursor = Cursors.Hand;
this.ItemHeight = 16;
this.BackColor = System.Drawing.Color.Green;
this.DropDownHeight = 1;
this.DropDownWidth = 1;
this.DrawMode = DrawMode.OwnerDrawFixed; //指定控件元素为自定义绘制
2、定义控件的单击事件,弹出颜色框
protected override void OnClick(EventArgs e)
...{
ColorBoxForm a = new ColorBoxForm();
a.SelectColor += new ColorBoxForm.MouseSelectColor(ColorForm_SelectColor); //代码中省略了命名空间
a.Show(this);
base.OnClick(e);
}
3、自定义绘制下拉元素（可省略）
protected override void OnDrawItem(DrawItemEventArgs e)
...{
base.OnDrawItem(e);
}
以上控件制作完成，得到效果如下：
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