C# 自定义窗体的最大化、最小化和关闭按钮

自定义窗体的最大化、最小化和关闭按钮, C#移动无标题栏窗体的三种代码： C#移动无标题栏窗体的三种代码：第一种采用，需注意窗体上的控件是否把窗体覆盖了。。。MouseDown、MouseMove、MouseUp事件应该是鼠标所处位置最顶层的控件的事件 在窗体的类中声明两个变量 private Point mouseOffset; //记录鼠标指针的坐标 private bool isMouseDown = false; //记录鼠标按键是否按下 创建该窗体 MouseDown、MouseMove、MouseUp事件的相应处理程序 private void Form1_MouseDown(object sender, System.Windows.Forms.MouseEventArgs e) { int xOffset; int yOffset; if (e.Button == MouseButtons.Left) { xOffset = -e.X ; yOffset = -e.Y ; mouseOffset = new Point(xOffset, yOffset); isMouseDown = true; } } private void Form1_MouseMove(object sender, System.Windows.Forms.MouseEventArgs e) { if (isMouseDown) { Point mousePos = Control.MousePosition; mousePos.Offset(mouseOffset.X, mouseOffset.Y); Location = mousePos; } } private void Form1_MouseUp(object sender, System.Windows.Forms.MouseEventArgs e) { // 修改鼠标状态isMouseDown的值 // 确保只有鼠标左键按下并移动时，才移动窗体 if (e.Button == MouseButtons.Left) { isMouseDown = false; } } 第二种调用API 未验证 using System.Runtime.InteropServices; [DllImport("user32.dll")] public static extern bool ReleaseCapture(); [DllImport("user32.dll")] public static extern bool SendMessage(IntPtr hwnd, int wMsg, int wParam, int lParam); public const int WM_SYSCOMMAND = 0x0112; public const int SC_MOVE = 0xF010; public const int HTCAPTION = 0x0002; private void Form1_MouseDown(object sender, MouseEventArgs e) { ReleaseCapture(); SendMessage(this.Handle, WM_SYSCOMMAND, SC_MOVE + HTCAPTION, 0); } 第三种未验证 private bool isMouseDown = false; private Point FormLocation; //form的location private Point mouseOffset; //鼠标的按下位置 [DllImport("user32.dll")] public static extern bool ReleaseCapture(); [DllImport("user32.dll")] public static extern bool SendMessage(IntPtr hwnd, int wMsg, int wParam, int lParam); private const int WM_SYSCOMMAND = 0x0112;//点击窗口左上角那个图标时的系统信息 private const int SC_MOVE = 0xF010;//移动信息 private const int HTCAPTION = 0x0002;//表示鼠标在窗口标题栏时的系统信息 private const int WM_NCHITTEST = 0x84;//鼠标在窗体客户区（除了标题栏和边框以外的部分）时发送的消息 private const int HTCLIENT = 0x1;//表示鼠标在窗口客户区的系统消息 private const int SC_MAXIMIZE = 0xF030;//最大化信息 private const int SC_MINIMIZE = 0xF020;//最小化信息 protected override void WndProc(ref Message m) { switch (m.Msg) { case WM_SYSCOMMAND: if (m.WParam == (IntPtr)SC_MAXIMIZE) { m.WParam = (IntPtr)SC_MINIMIZE; } break; case WM_NCHITTEST: //如果鼠标移动或单击 base.WndProc(ref m);//调用基类的窗口过程——WndProc方法处理这个消息 if (m.Result == (IntPtr)HTCLIENT)//如果返回的是HTCLIENT { m.Result = (IntPtr)HTCAPTION;//把它改为HTCAPTION return;//直接返回退出方法 } break; } base.WndProc(ref m);//如果不是鼠标移动或单击消息就调用基类的窗口过程进行处理 } private void Form1_Load(object sender, EventArgs e) { } ------------------------------- 如何在窗体标题栏左边的控制菜单加入自己的菜单啊？ 我们一般在窗口标题栏点右键 或 按Alt+空格 可以弹出那个菜单。 ------解决方案-------------------- using System.Runtime.InteropServices; [DllImport( "user32.dll ")] public static extern IntPtr GetSystemMenu(IntPtr hWnd, bool bRevert); [DllImport( "user32.dll ")] public static extern bool InsertMenu(IntPtr hMenu, uint uPosition, uint uFlags, uint uIDNewItem, string lpNewItem); public const int MF_BYCOMMAND = 0; public const int MF_STRING = 0; public const int MF_BYPOSITION = 0x400; public const int MF_SEPARATOR = 0x800; private const uint SC_ABOUT = 0x0001; public const int WM_SYSCOMMAND = 0x0112; private void Form1_Load(object sender, EventArgs e) { IntPtr vMenuHandle = GetSystemMenu(Handle, false); InsertMenu(vMenuHandle, 255, MF_STRING, SC_ABOUT, "About... "); } protected override void WndProc(ref Message m) { switch (m.Msg) { case WM_SYSCOMMAND: if ((uint)m.WParam == SC_ABOUT) { MessageBox.Show( "Zswang 路过! "); } break; } base.WndProc(ref m); }