江门seo网站推广,创新的营销型网站,智能建站与正常的网站,大连有几个区LinearGradientBrush是用来渐变效果的#xff0c;使用的初始化参数是矩形区域#xff0c;开始颜色#xff0c;结束颜色#xff0c;颜色变化方向#xff0c;它能够形成比较统一的渐变效果#xff0c;对比PathGradientBrush的渐变#xff0c;它的特点是它与周围的颜色渐变…LinearGradientBrush是用来渐变效果的使用的初始化参数是矩形区域开始颜色结束颜色颜色变化方向它能够形成比较统一的渐变效果对比PathGradientBrush的渐变它的特点是它与周围的颜色渐变频率是一样的设置LinearGradientBrush的区域大小时可以想象一个大的有渐变色的长方形压在多边形上面并根据多边形的边界裁剪。 效果图 源码 using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Text;using System.Windows.Forms;using System.Drawing.Drawing2D;
namespace Graphic{ public partial class Demo_UseLinearGradientBrush : Form { public Demo_UseLinearGradientBrush() { InitializeComponent(); } private void b_start_color_Click(object sender, EventArgs e) { ColorDialog clr new ColorDialog(); clr.ShowDialog(); this.p_start_color.BackColor clr.Color; } private void b_end_color_Click(object sender, EventArgs e) { ColorDialog clr new ColorDialog(); clr.ShowDialog(); this.p_end_color.BackColor clr.Color; } private void p_drawpic_Paint(object sender, PaintEventArgs e) { drawpic(this.p_start_color.BackColor, this.p_end_color.BackColor); } //绘图方法 private void drawpic(Color start, Color end) { LinearGradientBrush br new LinearGradientBrush(this.ClientRectangle, start, end, LinearGradientMode.ForwardDiagonal); Graphics g this.p_drawpic.CreateGraphics();//为控件创建Graphics g.Clear(this.BackColor); g.FillRectangle(br,this.ClientRectangle); Font font new Font(隶书, 50, FontStyle.Bold); g.DrawString(测试, font, br, new PointF(100, 50)); g.Dispose(); } }}
