比较经典的窗体效果

 渐显的窗体

private void Form1_Load(object sender, System.EventArgs e)
        ...{
            this.timer1.Enabled=true;
            this.Opacity=0;
        }

        private void timer1_Tick(object sender, System.EventArgs e)
        ...{
            if(this.Opacity<1)
            ...{
                this.Opacity=this.Opacity+0.05;
            }
            else
            ...{
                this.timer1.Enabled=false;
            }
        }

这个实在没有什么新奇的,改透明度而已.

渐变的窗口背景

using System.Drawing.Drawing2D; 

private void Form1_Paint(object sender, System.Windows.Forms.PaintEventArgs e)
        ...{
            Graphics g=e.Graphics;
            Color FColor=Color.Blue;
            Color TColor=Color.Yellow;
            Brush b =new LinearGradientBrush(this.ClientRectangle, FColor, TColor, LinearGradientMode.ForwardDiagonal);
            g.FillRectangle(b,this.ClientRectangle);
        }

        private void Form1_Resize(object sender, System.EventArgs e)
        ...{
            this.Invalidate();
        }

一般般,没有什么新意.

窗体总在最顶

this.TopMost = true;

一些朋友老问,所以贴出来.

后面的是我个人比较喜欢用的效果:

多边型窗体

using System.Runtime.InteropServices;         //用API的都知道

[DllImport("gdi32")]
        private static extern IntPtr CreatePolygonRgn(Point[] lpPoint,int nCount,int nPolyFillMode);
        [DllImport("user32")]
        private static extern IntPtr SetWindowRgn(IntPtr hWnd,IntPtr hRgn,bool bRedraw);
                                                                                                                                            const int WINDING = 2;
        private void Form1_Load(object sender, System.EventArgs e)
        ...{
            Point[] pt=...{
                            new Point(this.Width /2,0),
                            new Point(0,this.Height/2),
                            new Point(this.Width/2,this.Height),
                            new Point(this.Width,this.Height/2),
                            new Point(this.Width,0)
                        };

            
            IntPtr m_rgn;
            m_rgn=CreatePolygonRgn(pt,5,WINDING);
            SetWindowRgn(this.Handle,m_rgn,true);

看看下面的,可能喜欢的人多些.

动画效果

using System.Runtime.InteropServices;


        [System.Runtime.InteropServices.DllImport("user32")]
        private static extern bool AnimateWindow(IntPtr hwnd,int dwTime, int dwFlags);
        const int AW_HOR_POSITIVE = 0x0001;
        const int AW_HOR_NEGATIVE = 0x0002;
        const int AW_VER_POSITIVE = 0x0004;
        const int AW_VER_NEGATIVE = 0x0008;
        const int AW_CENTER = 0x0010;
        const int AW_HIDE = 0x10000;
        const int AW_ACTIVATE = 0x20000;
        const int AW_SLIDE = 0x40000;
        private System.Windows.Forms.MainMenu mainMenu1;
        private System.Windows.Forms.MenuItem menuItem1;
        private System.Windows.Forms.MenuItem menuItem2;
        const int AW_BLEND = 0x80000;        

        private void Form1_Load(object sender, System.EventArgs e)
        ...{
            AnimateWindow(this.Handle,1000, AW_CENTER | AW_ACTIVATE);
        
        }

        private void Form1_Closing(object sender, System.ComponentModel.CancelEventArgs e)
        ...{
            AnimateWindow(this.Handle, 1000, AW_SLIDE | AW_HIDE | AW_VER_NEGATIVE);
            
        }

这个可以实现像QQ那样的上拉效果,当然需要把窗体关闭改为鼠标离开事件了,呵呵.