界面编程之设计字型窗体

1. 新建一个工程demo

2. 添加以下引用：

  [System.Runtime.InteropServices.DllImport("gdi32")]  private static extern IntPtr CreateFont(int H,int W,int E,int O,int FW,int I,int u,int S,int C,int OP,int CP,int Q,int PAF,string F);  [System.Runtime.InteropServices.DllImport("user32")]  private static extern IntPtr GetDC(IntPtr hwnd);  [System.Runtime.InteropServices.DllImport("gdi32")]  private static extern IntPtr BeginPath(IntPtr hdc);  [System.Runtime.InteropServices.DllImport("gdi32")]  private static extern IntPtr EndPath(IntPtr hdc);  [System.Runtime.InteropServices.DllImport("gdi32")]  private static extern IntPtr PathToRegion(IntPtr hdc);  [System.Runtime.InteropServices.DllImport("gdi32")]  private static extern int SetBkMode(IntPtr hdc,int nBkMode);  [System.Runtime.InteropServices.DllImport("gdi32")]  private static extern IntPtr SelectObject(IntPtr hdc,IntPtr hObject);  [System.Runtime.InteropServices.DllImport("gdi32")]  private static extern int TextOut(IntPtr hdc,int x,int y,string lpString, int nCount);                                            [System.Runtime.InteropServices.DllImport("user32")]  private static extern IntPtr SetWindowRgn(IntPtr hwnd,IntPtr hRgn,bool bRedraw);

3.添加一些变量  const int FW_HEAVY = 900;  const int ANSI_CHARSET = 0;  const int OUT_DEFAULT_PRECIS = 0;  const int CLIP_DEFAULT_PRECIS = 0;  const int DEFAULT_QUALITY = 0;  const int DEFAULT_PITCH = 0;  const int FF_SWISS = 32;  const int TRANSPARENT = 1;

4.添加窗体的Load方法:  private void 设计字型窗体_Load(object sender, System.EventArgs e)  {   IntPtr dc=GetDC(this.Handle);   IntPtr m_Font=CreateFont(200, 100, 0, 0, FW_HEAVY, 1, 0,    0, ANSI_CHARSET, OUT_DEFAULT_PRECIS,    CLIP_DEFAULT_PRECIS, DEFAULT_QUALITY,    DEFAULT_PITCH | FF_SWISS, "宋体");   //创建字体   BeginPath(dc);   //开始记录窗体轮廓路径   SetBkMode(dc,TRANSPARENT);   //设置背景为透明模式,这是必须有的   IntPtr m_OldFont=SelectObject(dc,m_Font);   TextOut(dc,0, 0, "C#",2);   SelectObject(dc,m_OldFont);   EndPath(dc);   //结束记录窗体轮廓路径   IntPtr m_wndRgn=PathToRegion(dc);   //把所记录的路径转化为窗体轮廓句柄   SetWindowRgn(this.Handle,m_wndRgn,true);   //赋予窗体指定的轮廓形状  }