[英]Mouse clicks on the created regions in Venn diagram
我創建了一個維恩圖,看起來像這樣,
我還創建了用於處理維恩各個部分的點擊的區域。 左/右和普通兩部分。 這是我的代碼,
private void panelControlVennDiagram_Paint(object sender, PaintEventArgs e)
{
Rectangle leftVenn = new Rectangle(20, 50, 130, 130);
Rectangle rightVenn = new Rectangle(60, 50, 130, 130);
commonRegion = new Region();
Pen pen = new Pen(Color.Black,3);
using (Brush brushLeft = new SolidBrush(leftVennColor))
{
ellipseLeftOnlyPath.AddEllipse(leftVenn);
leftOnlyRegion = new Region(ellipseLeftOnlyPath);
e.Graphics.FillEllipse(brushLeft, leftVenn);
e.Graphics.DrawEllipse(pen, leftVenn);
brushLeft.Dispose();
}
using (Brush brushRight = new SolidBrush(rightVennColor))
{
ellipseRightOnlyPath.AddEllipse(rightVenn);
rightOnlyRegion = new Region(rightVenn);
e.Graphics.FillEllipse(brushRight, rightVenn);
e.Graphics.DrawEllipse(pen, rightVenn);
brushRight.Dispose();
}
using (GraphicsPath circle_path = new GraphicsPath())
{
circle_path.AddEllipse(leftVenn);
commonRegion.Intersect(circle_path);
}
using (GraphicsPath circle_path = new GraphicsPath())
{
circle_path.AddEllipse(rightVenn);
commonRegion.Intersect(circle_path);
}
leftOnlyRegion.Exclude(commonRegion);
rightOnlyRegion.Exclude(commonRegion);
using (Brush brushCommon = new SolidBrush(commonColor))
{
e.Graphics.FillRegion(brushCommon, commonRegion);
brushCommon.Dispose();
}
using (Brush brushLeftOnly = new SolidBrush(leftRightCommonColor))
{
ellipseLeftRightCommonPath.AddEllipse(65, 80, 35, 40);
e.Graphics.FillEllipse(brushLeftOnly, 65, 80, 35, 40);
e.Graphics.DrawEllipse(pen, 65, 80, 35, 40);
brushLeftOnly.Dispose();
}
using (Brush brushRightOnly = new SolidBrush(rightLeftCommonColor))
{
ellipseRightLeftCommonPath.AddEllipse(105, 110, 35, 40);
e.Graphics.FillEllipse(brushRightOnly, 105, 110, 35, 40);
e.Graphics.DrawEllipse(pen, 105, 110, 35, 40);
brushRightOnly.Dispose();
}
Brush brush = new SolidBrush(Color.Black);
Font stringFont = new Font("Calibri", 9, FontStyle.Bold);
Font stringFontCommon = new Font("Calibri", 8, FontStyle.Bold);
e.Graphics.DrawString(leftValue.ToString(), stringFont, brush, 40, 90);
e.Graphics.DrawString(rightValue.ToString(), stringFont, brush, 160, 90);
e.Graphics.DrawString(leftRightValue.ToString(), stringFontCommon, brush, 70, 115);
e.Graphics.DrawString(rightLeftValue.ToString(), stringFontCommon, brush, 110, 115);
brush.Dispose();
stringFont.Dispose(); stringFontCommon.Dispose();
pen.Dispose();
}
這是為了處理鼠標單擊。 基本上,我只想對左/右部分而不是它們的交點進行單擊處理。 但是即使這樣我也沒有得到消息框。 有時,如果我設置了斷點,它確實會擊中消息框代碼,但有時不會。
private void panelControlVennDiagram_MouseClick(object sender, MouseEventArgs e)
{
if (e.Button == System.Windows.Forms.MouseButtons.Left)
{
if (ellipseLeftRightCommonPath.IsVisible(e.Location))
MessageBox.Show("Left - Right Common");
else if (ellipseRightLeftCommonPath.IsVisible(e.Location))
MessageBox.Show("Right - Left Common");
else if (leftOnlyRegion.IsVisible(e.Location))
MessageBox.Show("Left Only");
else if (rightOnlyRegion.IsVisible(e.Location))
MessageBox.Show("Right Only");
}
}
怎么了 請幫忙。
我直接使用區域而不是使用GraphicsPath。
leftOnlyRegion = new Region(leftVenn);
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