项目场景：
在 WinForms 中制作 无边框窗体（FormBorderStyle = None）时，默认失去了窗口的标题栏与边框，因此也失去了通过鼠标拖动移动和调整大小的能力。本例子通过一个标题栏来拖动窗体，通过状态栏右下角的地方来拖动来改变窗体大小。本例子创建了两个窗体。一个baseform用来放标题栏和状态栏。
问题描述
提示：这里描述项目中遇到的问题：
难点是我窗体上被标题栏和状态栏dock之后很难选中
c
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Diagnostics;
using System.Drawing;
using System.IO;
using System.Linq;
using System.Runtime.ConstrainedExecution;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace WindowsFormsApp1
{
public partial class Form1: Form
{
public Form1()
{
InitializeComponent();
panel1.MouseMove += panel1_MouseMove;
panel1.MouseDown += panel1_MouseDown;
panel1.MouseUp += Panel1_MouseUp;
panel2.MouseDown += PanelTitle_MouseDown;
this.DoubleBuffered = true;
}
[DllImport("user32.dll")]
public static extern bool ReleaseCapture();
[DllImport("user32.dll")]
public static extern int SendMessage(IntPtr hWnd, int Msg, int wParam, int lParam);
public const int WM_NCLBUTTONDOWN = 0xA1;
public const int HTCAPTION = 0x2;
private void PanelTitle_MouseDown(object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.Left)
{
ReleaseCapture();
SendMessage(this.Handle, WM_NCLBUTTONDOWN, HTCAPTION, 0);
}
}
private void Panel1_MouseUp(object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.Left)
{
this.Size = previousRect.Size;
isResizing = false;
}
}
private bool isResizing = false;
private Point lastMousePos;
private Size lastMouseSize;
private Size NewMouseSize;
private const int resizeArea = 15;
private Rectangle previousRect;
private void panel1_MouseMove(object sender, MouseEventArgs e)
{
bool inBottomRight = e.X >= panel1.Width - resizeArea && e.Y >= panel1.Height - resizeArea;
if (inBottomRight || isResizing)
panel1.Cursor = Cursors.SizeNWSE;
else
panel1.Cursor = Cursors.Default;
if (isResizing && e.Button == MouseButtons.Left)
{
int dx = e.X - lastMousePos.X;
int dy = e.Y - lastMousePos.Y;
Size newSize = new Size(lastMouseSize.Width + dx,lastMouseSize.Height + dy);
Rectangle newRect = new Rectangle(this.Location, newSize);
previousRect = newRect;
OnUpdateRichTextBox?.Invoke($" lastMousePos.X:{lastMousePos.X} lastMousePos.Y:{lastMousePos.Y} e.Y:{e.Y} e.X:{e.X} dx:{dx} dy:{dy}", Color.Black);
}
}
private void panel1_MouseDown(object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.Left &&
e.X >= panel1.Width - resizeArea &&
e.Y >= panel1.Height - resizeArea)
{
lastMouseSize = this.Size;
isResizing = true;
lastMousePos = e.Location;
}
}
public event Action<string , Color> OnUpdateRichTextBox;
/// <summary>
/// 改变richtextbox 当前插入行颜色
/// </summary>
/// <param name="rtBox"></param>
/// <param name="addtext"></param>
/// <param name="color"></param>
/// <param name="IsaddNewLine"></param
public void AppendTextColorful(RichTextBox rtBox, string addtext, Color color, bool IsaddNewLine = false)
{
if (IsaddNewLine)
{
addtext += Environment.NewLine;
}
try
{
if (rtBox.InvokeRequired)
{
rtBox.Invoke(new Action(() =>
{
rtBox.ScrollToCaret();
rtBox.SelectionStart = rtBox.TextLength;
rtBox.SelectionLength = 0;
rtBox.SelectionColor = color;
rtBox.AppendText(DateTime.Now.ToString("yyyy:MM:dd HH:mm:ss:fff") + " " + addtext + "\r\n");
rtBox.SelectionColor = rtBox.ForeColor;
if (rtBox.Lines.Length > 1000)
rtBox.Clear();
}));
}
else
{
rtBox.ScrollToCaret();
rtBox.SelectionStart = rtBox.TextLength;
rtBox.SelectionLength = 0;
rtBox.SelectionColor = color;
rtBox.AppendText(DateTime.Now.ToString("yyyy:MM:dd HH:mm:ss:fff") + addtext + "\r\n");
rtBox.SelectionColor = rtBox.ForeColor;
if (rtBox.Lines.Length > 1000)
rtBox.Clear();
}
if (!Directory.Exists($"Log\\"))
{
Directory.CreateDirectory($"Log\\");
}
//LoggerUtility.Instance.WriteLog(addtext, "normal");
}
catch (Exception ex)
{
//LoggerUtility.Instance.WriteException(ex);
}
}
}
}
c
using System;
using System.Collections.Generic;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace WindowsFormsApp1
{
class Class1:Form1
{
private RichTextBox richTextBox1;
public Class1()
{
InitializeComponent();
OnUpdateRichTextBox += UpdateTextBox1;
}
//RichTextBox richTextBox1;
private void UpdateTextBox1(string str, Color clr)
{
AppendTextColorful(richTextBox1, str, clr);
}
private void InitializeComponent()
{
this.richTextBox1 = new System.Windows.Forms.RichTextBox();
this.SuspendLayout();
//
// richTextBox1
//
this.richTextBox1.Dock = System.Windows.Forms.DockStyle.Fill;
this.richTextBox1.Location = new System.Drawing.Point(0, 57);
this.richTextBox1.Name = "richTextBox1";
this.richTextBox1.Size = new System.Drawing.Size(1232, 503);
this.richTextBox1.TabIndex = 2;
this.richTextBox1.Text = "";
//
// Class1
//
this.AutoScaleDimensions = new System.Drawing.SizeF(8F, 15F);
this.ClientSize = new System.Drawing.Size(1232, 606);
this.Controls.Add(this.richTextBox1);
this.Name = "Class1";
this.Controls.SetChildIndex(this.richTextBox1, 0);
this.ResumeLayout(false);
}
}
}