C#自定义无边框MessageBox窗体

C#自定义无边框MessageBox窗体

本例子中制作一个无边框的MessageBox窗体

展示效果：

窗体设计

1.添加一个窗体继承原生Form

public partial class MessageBoxEX : Form

2.属性添加

         private string _titleText = "提示";

         public string TitleText
         {
             get { return _titleText; }
             set { _titleText = value; }
         }

         private string _contentText = "暂无信息!";

         public string ContentText
         {
             get { return _contentText; }
             set { _contentText = value; }
         }

3.事件添加

  /// <summary>
         /// 窗体load的时候讲文本赋值给消息框
         /// </summary>
         /// <param name="sender"></param>
         /// <param name="e"></param>
         private void MessageBoxEX_Load(object sender, EventArgs e)
         {
             if (this._contentText.Trim() != "")
             {
                 this.lblTitalContent.Text = this._titleText;
                 this.lblMessage.Text = this._contentText;
             }
         }
         /// <summary>
         /// 鼠标按下标题栏移动窗体
         /// </summary>
         /// <param name="sender"></param>
         /// <param name="e"></param>
         private void lblTitleBar_MouseDown(object sender, MouseEventArgs e)
         {
             //为当前的应用程序释放鼠标捕获
             ReleaseCapture();
             //发送消息﹐让系統误以为在标题栏上按下鼠标
             SendMessage((int)this.Handle, WM_NCLBUTTONDOWN, HTCAPTION, );
         }

         /// <summary>
         /// 关闭按钮
         /// </summary>
         /// <param name="sender"></param>
         /// <param name="e"></param>
         private void btnClose_Click(object sender, EventArgs e)
         {
             this.DialogResult = System.Windows.Forms.DialogResult.Cancel;
         }

         /// <summary>
         /// 确定按钮事件
         /// </summary>
         /// <param name="sender"></param>
         /// <param name="e"></param>
         private void btnOK_Click(object sender, EventArgs e)
         {
             this.DialogResult = System.Windows.Forms.DialogResult.OK;
         }

         /// <summary>
         /// 取消按钮
         /// </summary>
         /// <param name="sender"></param>
         /// <param name="e"></param>
         private void btnCancel_Click(object sender, EventArgs e)
         {
             this.DialogResult = System.Windows.Forms.DialogResult.Cancel;
         }

4.对外公共方法show设计 这里只填写俩个（有需要可以自行修改）

 public static DialogResult Show(string text)
         {
             MessageBoxEX msgbox = new MessageBoxEX(text);
             return msgbox.ShowDialog();
         }

         public static DialogResult Show(string title,string text)
         {
             MessageBoxEX msgbox = new MessageBoxEX(title,text);
             return msgbox.ShowDialog();
         }

5.添加单击窗体标题栏移动窗体

        [DllImport("user32.dll", EntryPoint = "SendMessageA")]
         private static extern int SendMessage(int hwnd, int wMsg, int wParam, int lParam);

         [DllImport("user32.dll")]
         private static extern int ReleaseCapture();

         private const int WM_NCLBUTTONDOWN = 0XA1;   //.定义鼠標左鍵按下
         private const int HTCAPTION = ;

         private void lblTitleBar_MouseDown(object sender, MouseEventArgs e)
         {
             //为当前的应用程序释放鼠标捕获
             ReleaseCapture();
             //发送消息﹐让系統误以为在标题栏上按下鼠标
             SendMessage((int)this.Handle, WM_NCLBUTTONDOWN, HTCAPTION, );
         }

效果展示：

工程源程序下载