C#WinForm自定义屏幕右下角弹窗

Love The Way You Lie 2022-08-25 15:57 815阅读 0赞

C\#WinForm自定义屏幕右下角弹窗

**1.原理**

还是利用重画窗体,以一个图片做背景,根据图片确定绘制区域,自绘标题和内容及关闭按钮,主要用到以下方法及一个API  
/// <summary>  
/// 设定背景图片和透明色  
/// </summary>  
/// <param name="strFilename">背景图片路径</param>  
/// <param name="transparencyColor">透明色</param>  
/// <returns>Nothing</returns>  
public void SetBackgroundBitmap(string strFilename, Color transparencyColor)  
\{  
BackgroundBitmap = new Bitmap(strFilename);  
Width = BackgroundBitmap.Width;  
Height = BackgroundBitmap.Height;  
Region = BitmapToRegion(BackgroundBitmap, transparencyColor);  
\}  
/// <summary>  
/// 设定3-State关闭按钮的位图(来自文件),透明色及位置  
/// </summary>  
/// <param name="strFilename">位图路径(width must a multiple of 3)</param>  
/// <param name="transparencyColor">透明色</param>  
/// <param name="position">按钮位置</param>  
/// <returns>Nothing</returns>  
public void SetCloseBitmap(string strFilename, Color transparencyColor, Point position)  
\{  
CloseBitmap = new Bitmap(strFilename);  
CloseBitmap.MakeTransparent(transparencyColor);  
CloseBitmapSize = new Size(CloseBitmap.Width/3, CloseBitmap.Height);  
CloseBitmapLocation = position;  
\}

/// <summary>  
/// 设定3-State关闭按钮的位图,透明色及位置  
/// </summary>  
/// <param name="image">位图(width must be a multiple of 3)</param>  
/// <param name="transparencyColor">透明色</param>  
/// /// <param name="position">按钮位置</param>  
/// <returns>Nothing</returns>  
public void SetCloseBitmap(Image image, Color transparencyColor, Point position)  
\{  
CloseBitmap = new Bitmap(image);  
CloseBitmap.MakeTransparent(transparencyColor);  
CloseBitmapSize = new Size(CloseBitmap.Width/3, CloseBitmap.Height);  
CloseBitmapLocation = position;  
\}  
\[DllImport("user32.dll")\]  
private static extern Boolean ShowWindow(IntPtr hWnd,Int32 nCmdShow);

**2.调用方式**  
private void ButtonShowPopup1\_Click(object sender, System.EventArgs e)  
\{  
TaskbarNotifier taskbarNotifier1=new TaskbarNotifier();  
taskbarNotifier1.SetBackgroundBitmap(new Bitmap(GetType(),"skin.bmp"),Color.FromArgb(255,0,255));  
taskbarNotifier1.SetCloseBitmap(new Bitmap(GetType(),"close.bmp"),Color.FromArgb(255,0,255),new Point(127,8));  
taskbarNotifier1.TitleRectangle=new Rectangle(40,9,70,25);  
taskbarNotifier1.ContentRectangle=new Rectangle(8,41,133,68);  
taskbarNotifier1.TitleClick+=new EventHandler(TitleClick);  
taskbarNotifier1.ContentClick+=new EventHandler(ContentClick);  
taskbarNotifier1.CloseClick+=new EventHandler(CloseClick);  
  
  
//关闭按钮是否可用  
taskbarNotifier1.CloseClickable=checkBoxCloseClickable.Checked;  
//标题是否可点击  
taskbarNotifier1.TitleClickable=checkBoxTitleClickable.Checked;  
//内容是否可点击  
taskbarNotifier1.ContentClickable=checkBoxContentClickable.Checked;  
//内容框是否显示  
taskbarNotifier1.EnableSelectionRectangle=checkBoxSelectionRectangle.Checked;  
//光标停留时是否持续激活  
taskbarNotifier1.KeepVisibleOnMousOver=checkBoxKeepVisibleOnMouseOver.Checked;  
//光标进入时是否重新激活  
taskbarNotifier1.ReShowOnMouseOver=checkBoxReShowOnMouseOver.Checked;  
//标题,内容,完整显示所需时间,停留时间,完全隐藏所需时间  
taskbarNotifier1.Show(textBoxTitle.Text,textBoxContent.Text,Int32.Parse(textBoxDelayShowing.Text),Int32.Parse(textBoxDelayStaying.Text),Int32.Parse(textBoxDelayHiding.Text));  
\}

**3.控件完整源码**

using System;  
using System.Drawing;  
using System.Drawing.Imaging;  
using System.Drawing.Drawing2D;  
using System.Windows.Forms;  
using System.Runtime.InteropServices;

namespace CustomUIControls  
\{  
/// <summary>  
/// 屏幕右下角弹出消息提示窗口  
/// </summary>  
public class TaskbarNotifier : System.Windows.Forms.Form  
\{  
\#region TaskbarNotifier Protected Members  
protected Bitmap BackgroundBitmap = null;//背景图片  
protected Bitmap CloseBitmap = null;//关闭图片  
protected Point CloseBitmapLocation;//关闭坐标  
protected Size CloseBitmapSize;//  
protected Rectangle RealTitleRectangle;//标题框  
protected Rectangle RealContentRectangle;//内容框  
protected Rectangle WorkAreaRectangle;//工作区  
protected Timer timer = new Timer();  
protected TaskbarStates taskbarState = TaskbarStates.hidden;//显示状态  
protected string titleText;//标题文字  
protected string contentText;//内容文字  
protected Color normalTitleColor = Color.FromArgb(255,0,0);//标题显示颜色  
protected Color hoverTitleColor = Color.FromArgb(255,0,0);//  
protected Color normalContentColor = Color.FromArgb(0,0,0);  
protected Color hoverContentColor = Color.FromArgb(0,0,0x66);  
protected Font normalTitleFont = new Font("Arial",12,FontStyle.Regular,GraphicsUnit.Pixel);//字体  
protected Font hoverTitleFont = new Font("Arial",12,FontStyle.Bold,GraphicsUnit.Pixel);  
protected Font normalContentFont = new Font("Arial",11,FontStyle.Regular,GraphicsUnit.Pixel);  
protected Font hoverContentFont = new Font("Arial",11,FontStyle.Regular,GraphicsUnit.Pixel);  
protected int nShowEvents;//  
protected int nHideEvents;  
protected int nVisibleEvents;  
protected int nIncrementShow;  
protected int nIncrementHide;  
protected bool bIsMouseOverPopup = false;//  
protected bool bIsMouseOverClose = false;  
protected bool bIsMouseOverContent = false;  
protected bool bIsMouseOverTitle = false;  
protected bool bIsMouseDown = false;  
protected bool bKeepVisibleOnMouseOver = true;  
protected bool bReShowOnMouseOver = false;  
\#endregion  
  
\#region TaskbarNotifier Public Members  
public Rectangle TitleRectangle;  
public Rectangle ContentRectangle;  
public bool TitleClickable = false;  
public bool ContentClickable = true;  
public bool CloseClickable = true;  
public bool EnableSelectionRectangle = true;  
public event EventHandler CloseClick = null;  
public event EventHandler TitleClick = null;  
public event EventHandler ContentClick = null;  
\#endregion  
  
\#region TaskbarNotifier Enums  
/// <summary>  
/// List of the different popup animation status  
/// </summary>  
public enum TaskbarStates  
\{  
hidden = 0,  
appearing = 1,  
visible = 2,  
disappearing = 3  
\}  
\#endregion

\#region TaskbarNotifier Constructor  
/// <summary>  
/// The Constructor for TaskbarNotifier  
/// </summary>  
public TaskbarNotifier()  
\{  
// Window Style  
FormBorderStyle = FormBorderStyle.None;  
WindowState = FormWindowState.Minimized;  
base.Show();  
base.Hide();  
WindowState = FormWindowState.Normal;  
ShowInTaskbar = false;  
TopMost = true;  
MaximizeBox = false;  
MinimizeBox = false;  
ControlBox = false;  
  
timer.Enabled = true;  
timer.Tick += new EventHandler(OnTimer);  
\}  
\#endregion

\#region TaskbarNotifier Properties  
/// <summary>  
/// 获取当前显示状态(hidden, showing, visible, hiding)  
/// </summary>  
public TaskbarStates TaskbarState  
\{  
get  
\{  
return taskbarState;  
\}  
\}

/// <summary>  
/// 标题文字  
/// </summary>  
public string TitleText  
\{  
get  
\{  
return titleText;  
\}  
set  
\{  
titleText=value;  
Refresh();  
\}  
\}

/// <summary>  
/// 内容文字  
/// </summary>  
public string ContentText  
\{  
get  
\{  
return contentText;  
\}  
set  
\{  
contentText=value;  
Refresh();  
\}  
\}

/// <summary>  
/// Get/Set the Normal Title Color  
/// </summary>  
public Color NormalTitleColor  
\{  
get  
\{  
return normalTitleColor;  
\}  
set  
\{  
normalTitleColor = value;  
Refresh();  
\}  
\}

/// <summary>  
/// Get/Set the Hover Title Color  
/// </summary>  
public Color HoverTitleColor  
\{  
get  
\{  
return hoverTitleColor;  
\}  
set  
\{  
hoverTitleColor = value;  
Refresh();  
\}  
\}

/// <summary>  
/// Get/Set the Normal Content Color  
/// </summary>  
public Color NormalContentColor  
\{  
get  
\{  
return normalContentColor;  
\}  
set  
\{  
normalContentColor = value;  
Refresh();  
\}  
\}

/// <summary>  
/// Get/Set the Hover Content Color  
/// </summary>  
public Color HoverContentColor  
\{  
get  
\{  
return hoverContentColor;  
\}  
set  
\{  
hoverContentColor = value;  
Refresh();  
\}  
\}

/// <summary>  
/// Get/Set the Normal Title Font  
/// </summary>  
public Font NormalTitleFont  
\{  
get  
\{  
return normalTitleFont;  
\}  
set  
\{  
normalTitleFont = value;  
Refresh();  
\}  
\}

/// <summary>  
/// Get/Set the Hover Title Font  
/// </summary>  
public Font HoverTitleFont  
\{  
get  
\{  
return hoverTitleFont;  
\}  
set  
\{  
hoverTitleFont = value;  
Refresh();  
\}  
\}

/// <summary>  
/// Get/Set the Normal Content Font  
/// </summary>  
public Font NormalContentFont  
\{  
get  
\{  
return normalContentFont;  
\}  
set  
\{  
normalContentFont = value;  
Refresh();  
\}  
\}

/// <summary>  
/// Get/Set the Hover Content Font  
/// </summary>  
public Font HoverContentFont  
\{  
get  
\{  
return hoverContentFont;  
\}  
set  
\{  
hoverContentFont = value;  
Refresh();  
\}  
\}

/// <summary>  
/// Indicates if the popup should remain visible when the mouse pointer is over it.  
/// </summary>  
public bool KeepVisibleOnMousOver  
\{  
get  
\{  
return bKeepVisibleOnMouseOver;  
\}  
set  
\{  
bKeepVisibleOnMouseOver=value;  
\}  
\}

/// <summary>  
/// Indicates if the popup should appear again when mouse moves over it while it's disappearing.  
/// </summary>  
public bool ReShowOnMouseOver  
\{  
get  
\{  
return bReShowOnMouseOver;  
\}  
set  
\{  
bReShowOnMouseOver=value;  
\}  
\}

\#endregion

\#region TaskbarNotifier Public Methods  
\[DllImport("user32.dll")\]  
private static extern Boolean ShowWindow(IntPtr hWnd,Int32 nCmdShow);  
/// <summary>  
/// 显示窗体  
/// </summary>  
/// <param name="strTitle">标题文字</param>  
/// <param name="strContent">内容文字</param>  
/// <param name="nTimeToShow">显示所需时长(in milliseconds)</param>  
/// <param name="nTimeToStay">停留时长(in milliseconds)</param>  
/// <param name="nTimeToHide">隐藏所需时长(in milliseconds)</param>  
/// <returns>Nothing</returns>  
public void Show(string strTitle, string strContent, int nTimeToShow, int nTimeToStay, int nTimeToHide)  
\{  
WorkAreaRectangle = Screen.GetWorkingArea(WorkAreaRectangle);  
titleText = strTitle;  
contentText = strContent;  
nVisibleEvents = nTimeToStay;  
CalculateMouseRectangles();

int nEvents;//分多少次显示完成  
if (nTimeToShow > 10)  
\{  
//每次间隔时间至少为10毫秒,最少一个象素  
nEvents = Math.Min((nTimeToShow / 10), BackgroundBitmap.Height);  
nShowEvents = nTimeToShow / nEvents;//每次的时间间隔  
nIncrementShow = BackgroundBitmap.Height / nEvents;//每次递增高度  
\}  
else// 一次性显示完成  
\{  
nShowEvents = 10;  
nIncrementShow = BackgroundBitmap.Height;  
\}

if( nTimeToHide > 10)  
\{  
nEvents = Math.Min((nTimeToHide / 10), BackgroundBitmap.Height);  
nHideEvents = nTimeToHide / nEvents;//每次的时间间隔  
nIncrementHide = BackgroundBitmap.Height / nEvents;//每次递减高度  
\}  
else//一次性隐藏完成  
\{  
nHideEvents = 10;  
nIncrementHide = BackgroundBitmap.Height;  
\}

switch (taskbarState)  
\{  
case TaskbarStates.hidden:  
taskbarState = TaskbarStates.appearing;  
SetBounds(WorkAreaRectangle.Right-BackgroundBitmap.Width-17, WorkAreaRectangle.Bottom-1, BackgroundBitmap.Width, 0);  
timer.Interval = nShowEvents;  
timer.Start();  
// We Show the popup without stealing focus  
ShowWindow(this.Handle, 4);  
break;

case TaskbarStates.appearing:  
Refresh();  
break;

case TaskbarStates.visible:  
timer.Stop();  
timer.Interval = nVisibleEvents;  
timer.Start();  
Refresh();  
break;

case TaskbarStates.disappearing:  
timer.Stop();  
taskbarState = TaskbarStates.visible;  
SetBounds(WorkAreaRectangle.Right-BackgroundBitmap.Width-17, WorkAreaRectangle.Bottom-BackgroundBitmap.Height-1, BackgroundBitmap.Width, BackgroundBitmap.Height);  
timer.Interval = nVisibleEvents;  
timer.Start();  
Refresh();  
break;  
\}  
\}

/// <summary>  
/// Hides the popup  
/// </summary>  
/// <returns>Nothing</returns>  
public new void Hide()  
\{  
if (taskbarState != TaskbarStates.hidden)  
\{  
timer.Stop();  
taskbarState = TaskbarStates.hidden;  
base.Hide();  
\}  
\}

/// <summary>  
/// 设定背景图片和透明色  
/// </summary>  
/// <param name="strFilename">背景图片路径</param>  
/// <param name="transparencyColor">透明色</param>  
/// <returns>Nothing</returns>  
public void SetBackgroundBitmap(string strFilename, Color transparencyColor)  
\{  
BackgroundBitmap = new Bitmap(strFilename);  
Width = BackgroundBitmap.Width;  
Height = BackgroundBitmap.Height;  
Region = BitmapToRegion(BackgroundBitmap, transparencyColor);  
\}

/// <summary>  
/// 设定背景图片和透明色  
/// </summary>  
/// <param name="image">背景图片位图</param>  
/// <param name="transparencyColor">透明色</param>  
/// <returns>Nothing</returns>  
public void SetBackgroundBitmap(Image image, Color transparencyColor)  
\{  
BackgroundBitmap = new Bitmap(image);  
Width = BackgroundBitmap.Width;  
Height = BackgroundBitmap.Height;  
Region = BitmapToRegion(BackgroundBitmap, transparencyColor);  
\}

/// <summary>  
/// 设定3-State关闭按钮的位图,透明色及位置  
/// </summary>  
/// <param name="strFilename">位图路径(width must a multiple of 3)</param>  
/// <param name="transparencyColor">透明色</param>  
/// <param name="position">按钮位置</param>  
/// <returns>Nothing</returns>  
public void SetCloseBitmap(string strFilename, Color transparencyColor, Point position)  
\{  
CloseBitmap = new Bitmap(strFilename);  
CloseBitmap.MakeTransparent(transparencyColor);  
CloseBitmapSize = new Size(CloseBitmap.Width/3, CloseBitmap.Height);  
CloseBitmapLocation = position;  
\}

\#region TaskbarNotifier Protected Methods  
/// <summary>  
/// 画关闭按钮  
/// </summary>  
/// <param name="grfx"></param>  
protected void DrawCloseButton(Graphics grfx)  
\{  
if (CloseBitmap != null)  
\{  
Rectangle rectDest = new Rectangle(CloseBitmapLocation, CloseBitmapSize);  
Rectangle rectSrc;

if (bIsMouseOverClose)  
\{  
if (bIsMouseDown)  
rectSrc = new Rectangle(new Point(CloseBitmapSize.Width\*2, 0), CloseBitmapSize);  
else  
rectSrc = new Rectangle(new Point(CloseBitmapSize.Width, 0), CloseBitmapSize);  
\}  
else  
\{  
rectSrc = new Rectangle(new Point(0, 0), CloseBitmapSize);  
\}

grfx.DrawImage(CloseBitmap, rectDest, rectSrc, GraphicsUnit.Pixel);  
\}  
\}  
/// <summary>  
/// 画标题及内容文字  
/// </summary>  
/// <param name="grfx"></param>  
protected void DrawText(Graphics grfx)  
\{  
if (titleText != null && titleText.Length != 0)  
\{  
StringFormat sf = new StringFormat();  
sf.Alignment = StringAlignment.Near;  
sf.LineAlignment = StringAlignment.Center;  
sf.FormatFlags = StringFormatFlags.NoWrap;  
sf.Trimming = StringTrimming.EllipsisCharacter;  
if (bIsMouseOverTitle)  
grfx.DrawString(titleText, hoverTitleFont, new SolidBrush(hoverTitleColor), TitleRectangle, sf);  
else  
grfx.DrawString(titleText, normalTitleFont, new SolidBrush(normalTitleColor), TitleRectangle, sf);  
\}

if (contentText != null && contentText.Length != 0)  
\{  
StringFormat sf = new StringFormat();  
sf.Alignment = StringAlignment.Center;  
sf.LineAlignment = StringAlignment.Center;  
sf.FormatFlags = StringFormatFlags.MeasureTrailingSpaces;  
sf.Trimming = StringTrimming.Word;  
  
if (bIsMouseOverContent)  
\{  
grfx.DrawString(contentText, hoverContentFont, new SolidBrush(hoverContentColor), ContentRectangle, sf);  
if (EnableSelectionRectangle)  
ControlPaint.DrawBorder3D(grfx, RealContentRectangle, Border3DStyle.Etched, Border3DSide.Top | Border3DSide.Bottom | Border3DSide.Left | Border3DSide.Right);  
  
\}  
else  
grfx.DrawString(contentText, normalContentFont, new SolidBrush(normalContentColor), ContentRectangle, sf);  
\}  
\}  
/// <summary>  
///  
/// </summary>  
protected void CalculateMouseRectangles()  
\{  
Graphics grfx = CreateGraphics();  
StringFormat sf = new StringFormat();  
sf.Alignment = StringAlignment.Center;  
sf.LineAlignment = StringAlignment.Center;  
sf.FormatFlags = StringFormatFlags.MeasureTrailingSpaces;  
SizeF sizefTitle = grfx.MeasureString(titleText, hoverTitleFont, TitleRectangle.Width, sf);  
SizeF sizefContent = grfx.MeasureString(contentText, hoverContentFont, ContentRectangle.Width, sf);  
grfx.Dispose();

//We should check if the title size really fits inside the pre-defined title rectangle  
if (sizefTitle.Height > TitleRectangle.Height)  
\{  
RealTitleRectangle = new Rectangle(TitleRectangle.Left, TitleRectangle.Top, TitleRectangle.Width , TitleRectangle.Height );  
\}  
else  
\{  
RealTitleRectangle = new Rectangle(TitleRectangle.Left, TitleRectangle.Top, (int)sizefTitle.Width, (int)sizefTitle.Height);  
\}  
RealTitleRectangle.Inflate(0,2);

//We should check if the Content size really fits inside the pre-defined Content rectangle  
if (sizefContent.Height > ContentRectangle.Height)  
\{  
RealContentRectangle = new Rectangle((ContentRectangle.Width-(int)sizefContent.Width)/2+ContentRectangle.Left, ContentRectangle.Top, (int)sizefContent.Width, ContentRectangle.Height );  
\}  
else  
\{  
RealContentRectangle = new Rectangle((ContentRectangle.Width-(int)sizefContent.Width)/2+ContentRectangle.Left, (ContentRectangle.Height-(int)sizefContent.Height)/2+ContentRectangle.Top, (int)sizefContent.Width, (int)sizefContent.Height);  
\}  
RealContentRectangle.Inflate(0,2);  
\}

protected Region BitmapToRegion(Bitmap bitmap, Color transparencyColor)  
\{  
if (bitmap == null)  
throw new ArgumentNullException("Bitmap", "Bitmap cannot be null!");

int height = bitmap.Height;  
int width = bitmap.Width;

GraphicsPath path = new GraphicsPath();

for (int j=0; j<height; j++ )  
\{  
for (int i=0; i<width; i++)  
\{  
if (bitmap.GetPixel(i, j) == transparencyColor)  
continue;

int x0 = i;

while ((i < width) && (bitmap.GetPixel(i, j) != transparencyColor))  
i++;

path.AddRectangle(new Rectangle(x0, j, i-x0, 1));  
\}  
\}

Region region = new Region(path);  
path.Dispose();  
return region;  
\}  
\#endregion

\#region TaskbarNotifier Events Overrides  
protected void OnTimer(Object obj, EventArgs ea)  
\{  
switch (taskbarState)  
\{  
case TaskbarStates.appearing:  
if (Height < BackgroundBitmap.Height)  
SetBounds(Left, Top-nIncrementShow ,Width, Height + nIncrementShow);  
else  
\{  
timer.Stop();  
Height = BackgroundBitmap.Height;  
timer.Interval = nVisibleEvents;  
taskbarState = TaskbarStates.visible;  
timer.Start();  
\}  
break;

case TaskbarStates.visible:  
timer.Stop();  
timer.Interval = nHideEvents;

if ((bKeepVisibleOnMouseOver && !bIsMouseOverPopup ) || (!bKeepVisibleOnMouseOver))  
\{  
taskbarState = TaskbarStates.disappearing;  
\}  
timer.Start();  
break;

case TaskbarStates.disappearing:  
if (bReShowOnMouseOver && bIsMouseOverPopup)  
\{  
taskbarState = TaskbarStates.appearing;  
\}  
else  
\{  
if (Top < WorkAreaRectangle.Bottom)  
SetBounds(Left, Top + nIncrementHide, Width, Height - nIncrementHide);  
else  
Hide();  
\}  
break;  
\}  
  
\}

protected override void OnMouseEnter(EventArgs ea)  
\{  
base.OnMouseEnter(ea);  
bIsMouseOverPopup = true;  
Refresh();  
\}

protected override void OnMouseLeave(EventArgs ea)  
\{  
base.OnMouseLeave(ea);  
bIsMouseOverPopup = false;  
bIsMouseOverClose = false;  
bIsMouseOverTitle = false;  
bIsMouseOverContent = false;  
Refresh();  
\}

protected override void OnMouseMove(MouseEventArgs mea)  
\{  
base.OnMouseMove(mea);

bool bContentModified = false;  
  
if ( (mea.X > CloseBitmapLocation.X) && (mea.X < CloseBitmapLocation.X + CloseBitmapSize.Width) && (mea.Y > CloseBitmapLocation.Y) && (mea.Y < CloseBitmapLocation.Y + CloseBitmapSize.Height) && CloseClickable )  
\{  
if (!bIsMouseOverClose)  
\{  
bIsMouseOverClose = true;  
bIsMouseOverTitle = false;  
bIsMouseOverContent = false;  
Cursor = Cursors.Hand;  
bContentModified = true;  
\}  
\}  
else if (RealContentRectangle.Contains(new Point(mea.X, mea.Y)) && ContentClickable)  
\{  
if (!bIsMouseOverContent)  
\{  
bIsMouseOverClose = false;  
bIsMouseOverTitle = false;  
bIsMouseOverContent = true;  
Cursor = Cursors.Hand;  
bContentModified = true;  
\}  
\}  
else if (RealTitleRectangle.Contains(new Point(mea.X, mea.Y)) && TitleClickable)  
\{  
if (!bIsMouseOverTitle)  
\{  
bIsMouseOverClose = false;  
bIsMouseOverTitle = true;  
bIsMouseOverContent = false;  
Cursor = Cursors.Hand;  
bContentModified = true;  
\}  
\}  
else  
\{  
if (bIsMouseOverClose || bIsMouseOverTitle || bIsMouseOverContent)  
bContentModified = true;

bIsMouseOverClose = false;  
bIsMouseOverTitle = false;  
bIsMouseOverContent = false;  
Cursor = Cursors.Default;  
\}

if (bContentModified)  
Refresh();  
\}

protected override void OnMouseDown(MouseEventArgs mea)  
\{  
base.OnMouseDown(mea);  
bIsMouseDown = true;  
  
if (bIsMouseOverClose)  
Refresh();  
\}

protected override void OnMouseUp(MouseEventArgs mea)  
\{  
base.OnMouseUp(mea);  
bIsMouseDown = false;

if (bIsMouseOverClose)  
\{  
Hide();  
  
if (CloseClick != null)  
CloseClick(this, new EventArgs());  
\}  
else if (bIsMouseOverTitle)  
\{  
if (TitleClick != null)  
TitleClick(this, new EventArgs());  
\}  
else if (bIsMouseOverContent)  
\{  
if (ContentClick != null)  
ContentClick(this, new EventArgs());  
\}  
\}

protected override void OnPaintBackground(PaintEventArgs pea)  
\{  
Graphics grfx = pea.Graphics;  
grfx.PageUnit = GraphicsUnit.Pixel;  
  
Graphics offScreenGraphics;  
Bitmap offscreenBitmap;  
  
offscreenBitmap = new Bitmap(BackgroundBitmap.Width, BackgroundBitmap.Height);  
offScreenGraphics = Graphics.FromImage(offscreenBitmap);  
  
if (BackgroundBitmap != null)  
\{  
offScreenGraphics.DrawImage(BackgroundBitmap, 0, 0, BackgroundBitmap.Width, BackgroundBitmap.Height);  
\}  
DrawCloseButton(offScreenGraphics);  
DrawText(offScreenGraphics);  
grfx.DrawImage(offscreenBitmap, 0, 0);  
\}  
\#endregion  
\}  
\}