使用Win Form的Splitter的方法
Win Form 的 Splitter 使用心得
今天作个分析html代码,然后再批量下载的程序,其中用到 Splitter (分割条),编译程序后,发现分割条不起作用,拖动分割条的时候,相邻的两个 Panel 没有变换大校为这个几乎花了一天时间,也没找到原因。包括到其他机子上测试。
后来,再次作一个完全独立的测试项目,发现 Splitter 的使用有个算是 bug 的问题,如果你首先放两个 Panel ,然后再放一个 Splitter 。(注意这时候的次序)就会产生我上面出现的问题。这时候代码中的 InitializeComponent 函数部分代码如下:
private void InitializeComponent() { // // ... 其他代码 // this.panel1 = new System.Windows.Forms.Panel(); this.panel2 = new System.Windows.Forms.Panel(); this.splitter1 = new System.Windows.Forms.Splitter(); this.panel2.SuspendLayout(); this.SuspendLayout(); // // ... 其他代码 // // // panel1 // this.panel1.Dock = System.Windows.Forms.DockStyle.Left; this.panel1.Location = new System.Drawing.Point(0, 42); this.panel1.Name = "panel1"; this.panel1.Size = new System.Drawing.Size(120, 209); this.panel1.TabIndex = 6; this.panel1.Resize += new System.EventHandler(this.panel2_Resize); this.panel1.Paint += new System.Windows.Forms.PaintEventHandler(this.panel2_Paint); // // panel2 // this.panel2.Controls.Add(this.splitter1); this.panel2.Dock = System.Windows.Forms.DockStyle.Fill; this.panel2.Location = new System.Drawing.Point(120, 42); this.panel2.Name = "panel2"; this.panel2.Size = new System.Drawing.Size(328, 209); this.panel2.TabIndex = 7; this.panel2.Resize += new System.EventHandler(this.panel2_Resize); this.panel2.Paint += new System.Windows.Forms.PaintEventHandler(this.panel2_Paint); // // splitter1 // this.splitter1.BackColor = System.Drawing.SystemColors.Desktop; this.splitter1.Location = new System.Drawing.Point(0, 0); this.splitter1.Name = "splitter1"; this.splitter1.Size = new System.Drawing.Size(3, 209); this.splitter1.TabIndex = 0; this.splitter1.TabStop = false; // // Form1 // this.AutoScaleBaseSize = new System.Drawing.Size(5, 13); this.ClientSize = new System.Drawing.Size(448, 273); this.Controls.Add(this.panel2); this.Controls.Add(this.panel1); this.Controls.Add(this.toolBar1); this.Controls.Add(this.statusBar1); this.Name = "Form1"; this.Text = "站点下载工具 2003年9月21日"; this.panel2.ResumeLayout(false); this.ResumeLayout(false); }
注意:这时候的代码中的顺序。这时候,程序的执行是有问题的。分隔条会不起作用。
但是如果你把这三个控件放入顺序修改为下面的顺序就没有问题了。
1、放入一个 Panel 比如:panel1 然后设置他的 Dock 属性为:Left;
2、放入一个 Splitter 比如:splitter1 设置它的背景颜色为一个特殊的颜色,便于看执行效果;
3、放入一个 Panel 比如:panel2 然后设置他的 Dock 属性为:Fill;
4、编译执行程序,这时候就没有问题了。
这时候正确的代码应该是:( InitializeComponent 函数部分)
private void InitializeComponent() { // // ... 其他代码 // this.panel1 = new System.Windows.Forms.Panel(); this.panel2 = new System.Windows.Forms.Panel(); this.splitter1 = new System.Windows.Forms.Splitter(); this.panel2.SuspendLayout(); this.SuspendLayout(); // // ... 其他代码 // // // panel1 // this.panel1.Dock = System.Windows.Forms.DockStyle.Left; this.panel1.Location = new System.Drawing.Point(0, 42); this.panel1.Name = "panel1"; this.panel1.Size = new System.Drawing.Size(200, 209); this.panel1.TabIndex = 6; // // panel2 // this.panel2.Controls.Add(this.splitter1); this.panel2.Dock = System.Windows.Forms.DockStyle.Fill; this.panel2.Location = new System.Drawing.Point(200, 42); this.panel2.Name = "panel2"; this.panel2.Size = new System.Drawing.Size(248, 209); this.panel2.TabIndex = 7; // // splitter1 // this.splitter1.BackColor = System.Drawing.SystemColors.Desktop; this.splitter1.Location = new System.Drawing.Point(0, 0); this.splitter1.Name = "splitter1"; this.splitter1.Size = new System.Drawing.Size(3, 209); this.splitter1.TabIndex = 0; this.splitter1.TabStop = false; // // Form1 // this.AutoScaleBaseSize = new System.Drawing.Size(5, 13); this.ClientSize = new System.Drawing.Size(448, 273); this.Controls.Add(this.panel2); this.Controls.Add(this.panel1); this.Controls.Add(this.toolBar1); this.Controls.Add(this.statusBar1); this.Menu = this.mainMenu1; this.Name = "Form1"; this.Text = "站点下载工具 2003年9月21日"; this.Load += new System.EventHandler(this.Form1_Load); this.panel2.ResumeLayout(false); this.ResumeLayout(false); }
我程序的执行环境是 win2003 标准英文版 VS.net 2003 中文版
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