C#笔记:richtextbox 用法 <p>1 获取当前视图的第一行行号</p><pre class="brush:c#;toolbar:false">Point pos = new Point(10, 10); int firstIndex = this.richTextBox1.GetCharIndexFromPosition(pos); int firstLine = this.richTextBox1.GetLineFromCharIndex(firstIndex) + 1;</pre><p><br/></p><p>2 跳转到指定行</p><pre class="brush:c#;toolbar:false">[DllImport("user32.dll", EntryPoint = "SendMessage")] public static extern int SendMessage(IntPtr hWnd, int wMsg, int wParam, int lParam); public const int EM_LINESCROLL = 0xb6; ..... SendMessage(this.richTextBox2.Handle,EM_LINESCROLL, 0, firstLine - 1); .....</pre><p><br/></p><p>3 获取当前光标行号</p><pre class="brush:c#;toolbar:false">int index = richTextBox1.GetFirstCharIndexOfCurrentLine(); int line = richTextBox1.GetLineFromCharIndex(index) + 1;</pre><p><br/></p><p>4 跳转到文章最开始</p><pre class="brush:c#;toolbar:false">richTextBox2.SelectionStart = 0; richTextBox2.ScrollToCaret();</pre><p><br/></p><p><br/></p> 来自 大脸猫 写于 2016-07-16 21:08 -- 更新于2020-10-19 13:06 -- 1 条评论
