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  • 仿Office的程序载入窗体

      初次接触启动界面记不清是在哪一年了,估计是小学四年级第一次打开Office Word的时候吧,更记不清楚当时的启动界面是长啥样了。后来随着使用的软件越来越多,也见到各式各样的启动界面。下面就列举了两个平常本人平常最常见的窗体,其实windows系统在启动的过程中,有Window字样并且有动画效果的那个节面也算是一个启动界面。

      其目的很明显,就是程序启动之后,由于加载主界面的时间过长而导致用户体验不佳,于是往往在显示主界面之前多显示一个不带windows窗体元素的窗体,来显示应用程序加载的进度或者直接是一个静态的视图,作用在于就是跟用户反映程序是有响应的并且正在运行当中,从而提高用户体验。下面是我的载入窗

    主要是仿照了Office 2013的风格

      简约明了。其中窗体的底色,字体,文字颜色可以更改,左上角的制造商,中间的软件名称,左下角的进度信息都可以更改。不过暂时还没有把图标附加到左上角而已。

    窗体的设计如下所示

      载入窗的制造商,软件名称这些信息通过构造函数传参进行设置,此外默认的构造函数被屏蔽了

     1         private LoadingForm()
     2         {
     3             InitializeComponent();
     4         }
     5 
     6         public LoadingForm(string logoStr, string appNameStr, string iniMsgStr):this()
     7         {
     8             this.lbLogo.Text = logoStr;
     9             AppName = appNameStr;
    10             this.lbMsg.Text = iniMsgStr;
    11             this.picLoading.Width = this.Width;
    12 
    13             this.MouseDown+=new MouseEventHandler(LoadingForm_MouseDown);
    14             foreach (Control con in this.Controls)
    15             {
    16                 if (con.Equals(this.btnClose)) continue;
    17                 con.MouseDown += new MouseEventHandler(LoadingForm_MouseDown);
    18             }
    19         }

      对窗体的打开并非用单纯的Show或者ShowDialog,因为在主线程上Show的话,本身主线程要加载时就会阻塞,这样再阻塞的线程上show的话,窗体难以显示。如果用ShowDialog的也不行,虽然它可以让窗体显示出来,但是调用了ShowDialog之后直到窗体关闭了才返回。就是说载入窗关闭了之后才执行载入加载之类的操作,这样显得毫无意义。

      这里只是用来了一个异步去ShowDialog。代码如下

    1         public void ShowLoading()
    2         {
    3             Action callback = new Action(delegate()
    4             {
    5                 if (!this.IsDisposed)
    6                     this.ShowDialog();
    7             });
    8             callback.BeginInvoke(null, null);
    9         }

      这里在ShowDialog之前还多作了一个判断,在于关闭窗体的方法时释放了资源,因此在几个地方都要注意,关闭窗体的处理如下

     1         public void CloseLoading()
     2         {
     3             if (!this.IsDisposed && this.IsHandleCreated)
     4             {
     5                 this.Invoke((Action)delegate
     6                 {
     7                     this.Close();
     8                     this.Dispose();
     9 
    10                 });
    11             }
    12         }

      由于调用了Invoke,这个需要判断当前窗体是否已经是显示了出来,否则就会因为窗体的句柄不存在而抛出异常。

      在窗体上显示的进度信息,只是通过了一个外放的属性实现,其判断的用意跟关闭窗体时的一样。

     1         public string Message {
     2             get { return this.lbMsg.Text; }
     3             set 
     4             {
     5                 if (!this.IsDisposed&&this.IsHandleCreated)
     6                 {
     7                     this.Invoke((Action)delegate()
     8                     {
     9                         this.lbMsg.Text = value;
    10                     });
    11                 }
    12             }
    13         }

    为了窗体能具备可拖拽的效果,还额外加了一下的代码

     1         [DllImport("user32.dll")]
     2         private  static extern bool ReleaseCapture();
     3         [DllImport("user32.dll")]
     4         private static extern bool SendMessage(IntPtr hwnd, int wMsg, int wParam, int lParam);
     5         private const int WM_SYSCOMMAND = 0x0112;
     6         private const int SC_MOVE = 0xF010;
     7         private const int HTCAPTION = 0x0002;
     8 
     9         protected void LoadingForm_MouseDown(object sender, MouseEventArgs e)
    10         {
    11 
    12             ReleaseCapture();
    13             SendMessage(this.Handle, WM_SYSCOMMAND, SC_MOVE + HTCAPTION, 0);
    14         }

    调用的形式如下

                LoadingForm frm = new LoadingForm("HopeGi", "猴健工具集", "启动中...");
                frm.ShowLoading();
                //一系列操作
                frm.Message = "加载界面...";
                //一系列操作
                frm.CloseLoading();

      最近出了点状况,电脑很久也没碰了,前进的步伐缓了下来。能写出来的博客也不咋的,各位有什么好的建议和意见尽管提,谢谢!最后附上源码,可是用到的gif图片没附带上来

      1     public partial class LoadingForm : Form
      2     {
      3 
      4         [DllImport("user32.dll")]
      5         private  static extern bool ReleaseCapture();
      6         [DllImport("user32.dll")]
      7         private static extern bool SendMessage(IntPtr hwnd, int wMsg, int wParam, int lParam);
      8         private const int WM_SYSCOMMAND = 0x0112;
      9         private const int SC_MOVE = 0xF010;
     10         private const int HTCAPTION = 0x0002;
     11 
     12         private LoadingForm()
     13         {
     14             InitializeComponent();
     15         }
     16 
     17         public LoadingForm(string logoStr, string appNameStr, string iniMsgStr):this()
     18         {
     19             this.lbLogo.Text = logoStr;
     20             AppName = appNameStr;
     21             this.lbMsg.Text = iniMsgStr;
     22             this.picLoading.Width = this.Width;
     23 
     24             this.MouseDown+=new MouseEventHandler(LoadingForm_MouseDown);
     25             foreach (Control con in this.Controls)
     26             {
     27                 if (con.Equals(this.btnClose)) continue;
     28                 con.MouseDown += new MouseEventHandler(LoadingForm_MouseDown);
     29             }
     30         }
     31 
     32         public string Message {
     33             get { return this.lbMsg.Text; }
     34             set 
     35             {
     36                 if (!this.IsDisposed&&this.IsHandleCreated)
     37                 {
     38                     this.Invoke((Action)delegate()
     39                     {
     40                         this.lbMsg.Text = value;
     41                     });
     42                 }
     43             }
     44         }
     45 
     46         public void ShowLoading()
     47         {
     48             Action callback = new Action(delegate()
     49             {
     50                 if (!this.IsDisposed)
     51                     this.ShowDialog();
     52             });
     53             callback.BeginInvoke(null, null);
     54         }
     55 
     56         public void CloseLoading()
     57         {
     58             if (!this.IsDisposed && this.IsHandleCreated)
     59             {
     60                 this.Invoke((Action)delegate
     61                 {
     62                     this.Close();
     63                     this.Dispose();
     64 
     65                 });
     66             }
     67         }
     68 
     69 
     70         private string AppName {
     71             get { return this.lbAppName.Text; }
     72             set {
     73                 this.lbAppName.Text = value;
     74                 this.lbAppName.Location = new Point((this.Width - this.lbAppName.Width) / 2, this.lbAppName.Location.Y);
     75             }
     76         }
     77 
     78         private void btnClose_Click(object sender, EventArgs e)
     79         {
     80             this.CloseLoading();
     81             Environment.Exit(1);
     82         }
     83 
     84         protected void LoadingForm_MouseDown(object sender, MouseEventArgs e)
     85         {
     86 
     87             ReleaseCapture();
     88             SendMessage(this.Handle, WM_SYSCOMMAND, SC_MOVE + HTCAPTION, 0);
     89         }
     90 
     91         #region Windows Form Designer generated code
     92 
     93         /// <summary>
     94         /// Required method for Designer support - do not modify
     95         /// the contents of this method with the code editor.
     96         /// </summary>
     97         private void InitializeComponent()
     98         {
     99             this.lbLogo = new System.Windows.Forms.Label();
    100             this.lbAppName = new System.Windows.Forms.Label();
    101             this.lbMsg = new System.Windows.Forms.Label();
    102             this.btnClose = new System.Windows.Forms.PictureBox();
    103             this.picLoading = new System.Windows.Forms.PictureBox();
    104             ((System.ComponentModel.ISupportInitialize)(this.btnClose)).BeginInit();
    105             ((System.ComponentModel.ISupportInitialize)(this.picLoading)).BeginInit();
    106             this.SuspendLayout();
    107             // 
    108             // lbLogo
    109             // 
    110             this.lbLogo.AutoSize = true;
    111             this.lbLogo.Font = new System.Drawing.Font("楷体", 12F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(134)));
    112             this.lbLogo.ForeColor = System.Drawing.Color.White;
    113             this.lbLogo.Location = new System.Drawing.Point(13, 13);
    114             this.lbLogo.Name = "lbLogo";
    115             this.lbLogo.Size = new System.Drawing.Size(44, 16);
    116             this.lbLogo.TabIndex = 0;
    117             this.lbLogo.Text = "LOGO";
    118             // 
    119             // lbAppName
    120             // 
    121             this.lbAppName.AutoSize = true;
    122             this.lbAppName.Font = new System.Drawing.Font("黑体", 26.25F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(134)));
    123             this.lbAppName.ForeColor = System.Drawing.Color.White;
    124             this.lbAppName.Location = new System.Drawing.Point(138, 88);
    125             this.lbAppName.Name = "lbAppName";
    126             this.lbAppName.Size = new System.Drawing.Size(148, 35);
    127             this.lbAppName.TabIndex = 1;
    128             this.lbAppName.Text = "AppName
    ";
    129             // 
    130             // lbMsg
    131             // 
    132             this.lbMsg.AutoSize = true;
    133             this.lbMsg.Font = new System.Drawing.Font("宋体", 10.5F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(134)));
    134             this.lbMsg.ForeColor = System.Drawing.Color.White;
    135             this.lbMsg.Location = new System.Drawing.Point(16, 187);
    136             this.lbMsg.Name = "lbMsg";
    137             this.lbMsg.Size = new System.Drawing.Size(49, 14);
    138             this.lbMsg.TabIndex = 3;
    139             this.lbMsg.Text = "label1";
    140             // 
    141             // btnClose
    142             // 
    143             this.btnClose.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Right)));
    144             this.btnClose.Cursor = System.Windows.Forms.Cursors.Hand;
    145             this.btnClose.Image = global::AllTypeTest.Properties.Resources.Delete;
    146             this.btnClose.Location = new System.Drawing.Point(388, 11);
    147             this.btnClose.Name = "btnClose";
    148             this.btnClose.Size = new System.Drawing.Size(24, 24);
    149             this.btnClose.SizeMode = System.Windows.Forms.PictureBoxSizeMode.Zoom;
    150             this.btnClose.TabIndex = 4;
    151             this.btnClose.TabStop = false;
    152             this.btnClose.Click += new System.EventHandler(this.btnClose_Click);
    153             // 
    154             // picLoading
    155             // 
    156             this.picLoading.Image = global::AllTypeTest.Properties.Resources.download;
    157             this.picLoading.Location = new System.Drawing.Point(0, 126);
    158             this.picLoading.Name = "picLoading";
    159             this.picLoading.Size = new System.Drawing.Size(420, 20);
    160             this.picLoading.SizeMode = System.Windows.Forms.PictureBoxSizeMode.Zoom;
    161             this.picLoading.TabIndex = 2;
    162             this.picLoading.TabStop = false;
    163             // 
    164             // LoadingForm
    165             // 
    166             this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F);
    167             this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
    168             this.BackColor = System.Drawing.Color.ForestGreen;
    169             this.ClientSize = new System.Drawing.Size(424, 211);
    170             this.Controls.Add(this.btnClose);
    171             this.Controls.Add(this.lbMsg);
    172             this.Controls.Add(this.picLoading);
    173             this.Controls.Add(this.lbAppName);
    174             this.Controls.Add(this.lbLogo);
    175             this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.None;
    176             this.Name = "LoadingForm";
    177             this.ShowInTaskbar = false;
    178             this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
    179             this.Text = "LoadingForm";
    180             this.TopMost = true;
    181             ((System.ComponentModel.ISupportInitialize)(this.btnClose)).EndInit();
    182             ((System.ComponentModel.ISupportInitialize)(this.picLoading)).EndInit();
    183             this.ResumeLayout(false);
    184             this.PerformLayout();
    185 
    186         }
    187 
    188         #endregion
    189 
    190         private System.Windows.Forms.Label lbLogo;
    191         private System.Windows.Forms.Label lbAppName;
    192         private System.Windows.Forms.PictureBox picLoading;
    193         private System.Windows.Forms.Label lbMsg;
    194         private System.Windows.Forms.PictureBox btnClose;
    195         
    196     }
    LoadingForm
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  • 原文地址:https://www.cnblogs.com/HopeGi/p/3510809.html
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