在Winform的窗体中，存在背景图的情况下，不想在画面上加入按钮，只希望利用窗体自身的几个事件来实现按钮按下的效果，怎么样实现呢？
其实这也不难，只需要按照下列步骤即可实现，首先确定要按下的几个区域的坐标点和大小，准备好按下和弹出的图片，将这些坐标点和大小
组成一个个区域（使用GraphicsPath来完成）。然后使用几个Flage标志，标识是否区域的按下。具体实现的代码如下：
/// <summary>
/// 实时监控，酒位展示，酒柜介绍，网络订购4个按钮的位置参数
/// </summary>
int[,] BtnLocation = new int[4, 2]{{637,161},{683,269},{714,374},{637,478}};
/// <summary>
/// 4个按钮的Size参数
/// </summary>
Size BtnSize = new Size(285,92);
/// <summary>
/// 实时监控按钮是否按下的标志
/// </summary>
bool FlageMouseDownRealTime = false;
/// <summary>
/// 酒位展示按钮是否按下的标志
/// </summary>
bool FlageMouseDownWinePos = false;
/// <summary>
/// 酒柜介绍按钮是否按下的标志
/// </summary>
bool FlageMouseDownCupIntrol = false;
/// <summary>
/// 网络订购按钮是否按下的标志
/// </summary>
bool FlageMouseDownNetPurchase = false;
/// <summary>
/// 实时监控按钮的位置范围
/// </summary>
GraphicsPath gpRealTime = new GraphicsPath();
/// <summary>
/// 酒位展示按钮的位置范围
/// </summary>
GraphicsPath gpWinePos = new GraphicsPath();
/// <summary>
/// 酒柜介绍按钮的位置范围
/// </summary>
GraphicsPath gpCupIntrol = new GraphicsPath();
/// <summary>
/// 网络订购按钮的位置范围
/// </summary>
GraphicsPath gpNetPurchase = new GraphicsPath();
Graphics dc = null;
/// <summary>
/// 获取4个按钮的区域范围
/// </summary>
private void GetButtonGraphicPath()
{
FlageMouseDownRealTime = false;
FlageMouseDownWinePos = false;
FlageMouseDownCupIntrol = false;
FlageMouseDownNetPurchase = false;
Point[] pt = new Point[]{
new Point(BtnLocation[0,0],BtnLocation[0,1]),
new Point(BtnLocation[0,0]+BtnSize.Width,BtnLocation[0,1]),
new Point(BtnLocation[0,0]+BtnSize.Width,BtnLocation[0,1]+BtnSize.Height),
new Point(BtnLocation[0,0],BtnLocation[0,1]+BtnSize.Height)
};
gpRealTime.AddLines(pt);
pt = new Point[]{
new Point(BtnLocation[1,0],BtnLocation[1,1]),
new Point(BtnLocation[1,0]+BtnSize.Width,BtnLocation[1,1]),
new Point(BtnLocation[1,0]+BtnSize.Width,BtnLocation[1,1]+BtnSize.Height),
new Point(BtnLocation[1,0],BtnLocation[1,1]+BtnSize.Height)
};
gpWinePos.AddLines(pt);
pt = new Point[]{
new Point(BtnLocation[2,0],BtnLocation[2,1]),
new Point(BtnLocation[2,0]+BtnSize.Width,BtnLocation[2,1]),
new Point(BtnLocation[2,0]+BtnSize.Width,BtnLocation[2,1]+BtnSize.Height),
new Point(BtnLocation[2,0],BtnLocation[2,1]+BtnSize.Height)
};
gpCupIntrol.AddLines(pt);
pt = new Point[]{
new Point(BtnLocation[3,0],BtnLocation[3,1]),
new Point(BtnLocation[3,0]+BtnSize.Width,BtnLocation[3,1]),
new Point(BtnLocation[3,0]+BtnSize.Width,BtnLocation[3,1]+BtnSize.Height),
new Point(BtnLocation[3,0],BtnLocation[3,1]+BtnSize.Height)
};
gpNetPurchase.AddLines(pt);
}
private void InitialButtonsStyle()
{
GetButtonGraphicPath();
pxControl.Location = new Point(0,0);
pxControl.Size = new Size(1024,768);
SetBackGroudImg();
this.Controls.Add(pxControl);
dc = pxControl.CreateGraphics();
pxControl.MouseDoubleClick +=new MouseEventHandler(this.Main_MouseDoubleClick);
pxControl.MouseDown+=new MouseEventHandler(this.pxControl_MouseDown);
pxControl.MouseUp += new MouseEventHandler(this.pxControl_MouseUp);
pxControl.MouseMove += new MouseEventHandler(this.pxControl_MouseMove);
pxControl.MouseClick += new MouseEventHandler(this.pxControl_MouseClick);
}
/// <summary>
///按下4个按钮时的状态变化
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void pxControl_MouseDown(object sender,MouseEventArgs e)
{
if (gpRealTime.IsVisible(e.Location))
{
using(Image imgTemp = Image.FromFile(strWineRealStatusDownPath))
{
dc.DrawImage(imgTemp, BtnLocation[0, 0], BtnLocation[0, 1], BtnSize.Width,BtnSize.Height);
FlageMouseDownRealTime = true;
}
}
if (gpWinePos.IsVisible(e.Location))
{
using (Image imgTemp = Image.FromFile(strWinePosQueryDownPath))
{
dc.DrawImage(imgTemp, BtnLocation[1, 0], BtnLocation[1, 1], BtnSize.Width, BtnSize.Height);
FlageMouseDownWinePos = true;
}
}
if (gpCupIntrol.IsVisible(e.Location))
{
using (Image imgTemp = Image.FromFile(strWineCupIntroDownPath))
{
dc.DrawImage(imgTemp, BtnLocation[2, 0], BtnLocation[2, 1], BtnSize.Width, BtnSize.Height);
FlageMouseDownCupIntrol = true;
}
}
if (gpNetPurchase.IsVisible(e.Location))
{
using (Image imgTemp = Image.FromFile(strWinePurchaseDownPath))
{
dc.DrawImage(imgTemp, BtnLocation[3, 0], BtnLocation[3, 1], BtnSize.Width, BtnSize.Height);
FlageMouseDownNetPurchase = true;
}
}
}
/// <summary>
///离开4个按钮时的状态变化
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void pxControl_MouseMove(object sender, MouseEventArgs e)
{
if (gpRealTime.IsVisible(e.Location))
{
if (FlageMouseDownRealTime)
{
using (Image imgTemp = Image.FromFile(strWineRealStatusDownPath))
{
dc.DrawImage(imgTemp, BtnLocation[0, 0], BtnLocation[0, 1], BtnSize.Width, BtnSize.Height);
}
}
}
else
{
if (FlageMouseDownRealTime)
{
using (Image imgTemp = Image.FromFile(strWineRealStatusUpPath))
{
dc.DrawImage(imgTemp, BtnLocation[0, 0], BtnLocation[0, 1], BtnSize.Width, BtnSize.Height);
}
FlageMouseDownRealTime = false;
}
}
if (gpWinePos.IsVisible(e.Location))
{
if (FlageMouseDownWinePos)
{
using (Image imgTemp = Image.FromFile(strWinePosQueryDownPath))
{
dc.DrawImage(imgTemp, BtnLocation[1, 0], BtnLocation[1, 1], BtnSize.Width, BtnSize.Height);
}
}
}
else
{
if (FlageMouseDownWinePos)
{
using (Image imgTemp = Image.FromFile(strWinePosQueryUpPath))
{
dc.DrawImage(imgTemp, BtnLocation[1, 0], BtnLocation[1, 1], BtnSize.Width, BtnSize.Height);
}
FlageMouseDownWinePos = false;
}
}
if (gpCupIntrol.IsVisible(e.Location))
{
if (FlageMouseDownCupIntrol)
{
using (Image imgTemp = Image.FromFile(strWineCupIntroDownPath))
{
dc.DrawImage(imgTemp, BtnLocation[2, 0], BtnLocation[2, 1], BtnSize.Width, BtnSize.Height);
}
}
}
else
{
if (FlageMouseDownCupIntrol)
{
using (Image imgTemp = Image.FromFile(strWineCupIntroUpPath))
{
dc.DrawImage(imgTemp, BtnLocation[2, 0], BtnLocation[2, 1], BtnSize.Width, BtnSize.Height);
}
FlageMouseDownCupIntrol = false;
}
}
if (gpNetPurchase.IsVisible(e.Location))
{
if (FlageMouseDownNetPurchase)
{
using (Image imgTemp = Image.FromFile(strWinePurchaseDownPath))
{
dc.DrawImage(imgTemp, BtnLocation[3, 0], BtnLocation[3, 1], BtnSize.Width, BtnSize.Height);
}
}
}
else
{
if (FlageMouseDownNetPurchase)
{
using (Image imgTemp = Image.FromFile(strWinePurchaseUpPath))
{
dc.DrawImage(imgTemp, BtnLocation[3, 0], BtnLocation[3, 1], BtnSize.Width, BtnSize.Height);
}
FlageMouseDownNetPurchase = false;
}
}
}
/// <summary>
///松开4个按钮时的状态变化
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void pxControl_MouseUp(object sender, MouseEventArgs e)
{
if (gpRealTime.IsVisible(e.Location))
{
using (Image imgTemp = Image.FromFile(strWineRealStatusUpPath))
{
dc.DrawImage(imgTemp, BtnLocation[0, 0], BtnLocation[0, 1], BtnSize.Width, BtnSize.Height);
FlageMouseDownRealTime = false;
}
}
if (gpWinePos.IsVisible(e.Location))
{
using (Image imgTemp = Image.FromFile(strWinePosQueryUpPath))
{
dc.DrawImage(imgTemp, BtnLocation[1, 0], BtnLocation[1, 1], BtnSize.Width, BtnSize.Height);
FlageMouseDownWinePos = false;
}
}
if (gpCupIntrol.IsVisible(e.Location))
{
using (Image imgTemp = Image.FromFile(strWineCupIntroUpPath))
{
dc.DrawImage(imgTemp, BtnLocation[2, 0], BtnLocation[2, 1], BtnSize.Width, BtnSize.Height);
FlageMouseDownCupIntrol = false;
}
}
if (gpNetPurchase.IsVisible(e.Location))
{
using (Image imgTemp = Image.FromFile(strWinePurchaseUpPath))
{
dc.DrawImage(imgTemp, BtnLocation[3, 0], BtnLocation[3, 1], BtnSize.Width, BtnSize.Height);
FlageMouseDownNetPurchase = false;
}
}
}
/// <summary>
/// 按下4个按钮时的事件的变化
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void pxControl_MouseClick(object sender, MouseEventArgs e)
{
if (gpRealTime.IsVisible(e.Location))
{
btnRealStatus_Click(null, null);
}
else if (gpWinePos.IsVisible(e.Location))
{
btnWinePosQuery_Click(null, null);
}
else if (gpCupIntrol.IsVisible(e.Location))
{
btnWineCupIntro_Click(null, null);
}
else if (gpNetPurchase.IsVisible(e.Location))
{
btnPurchase_Click(null, null);
}
}