winform.pas.~3~

Delphi 2005程序设计教程_实例源文件和教学课件

unit WinForm;

interface

uses
  System.Drawing, System.Collections, System.ComponentModel,
  System.Windows.Forms, System.Data;

type
  TWinForm = class(System.Windows.Forms.Form)
  {$REGION 'Designer Managed Code'}
  strict private
    /// <summary>
    /// Required designer variable.
    /// </summary>
    Components: System.ComponentModel.Container;
    Label1: System.Windows.Forms.Label;
    GroupBox1: System.Windows.Forms.GroupBox;
    TextBox1: System.Windows.Forms.TextBox;
    CheckBox1: System.Windows.Forms.CheckBox;
    CheckBox2: System.Windows.Forms.CheckBox;
    CheckBox3: System.Windows.Forms.CheckBox;
    GroupBox2: System.Windows.Forms.GroupBox;
    RadioButton1: System.Windows.Forms.RadioButton;
    RadioButton2: System.Windows.Forms.RadioButton;
    RadioButton3: System.Windows.Forms.RadioButton;
    rtbTest: System.Windows.Forms.RichTextBox;
    /// <summary>
    /// Required method for Designer support - do not modify
    /// the contents of this method with the code editor.
    /// </summary>
    procedure InitializeComponent;
    procedure CheckBox1_CheckedChanged(sender: System.Object; e: System.EventArgs);
    procedure rtbTest_SelectionChanged(sender: System.Object; e: System.EventArgs);
    procedure CheckBox2_CheckedChanged(sender: System.Object; e: System.EventArgs);
    procedure CheckBox3_CheckedChanged(sender: System.Object; e: System.EventArgs);
    procedure RadioButton1_CheckedChanged(sender: System.Object; e: System.EventArgs);
    procedure RadioButton2_CheckedChanged(sender: System.Object; e: System.EventArgs);
    procedure RadioButton3_CheckedChanged(sender: System.Object; e: System.EventArgs);
  {$ENDREGION}
  strict protected
    /// <summary>
    /// Clean up any resources being used.
    /// </summary>
    procedure Dispose(Disposing: Boolean); override;
  private
    { Private Declarations }
  public
    constructor Create;
  end;

  [assembly: RuntimeRequiredAttribute(TypeOf(TWinForm))]

implementation

{$AUTOBOX ON}

{$REGION 'Windows Form Designer generated code'}
/// <summary>
/// Required method for Designer support -- do not modify
/// the contents of this method with the code editor.
/// </summary>
procedure TWinForm.InitializeComponent;
begin
  Self.Label1 := System.Windows.Forms.Label.Create;
  Self.GroupBox1 := System.Windows.Forms.GroupBox.Create;
  Self.CheckBox3 := System.Windows.Forms.CheckBox.Create;
  Self.CheckBox2 := System.Windows.Forms.CheckBox.Create;
  Self.CheckBox1 := System.Windows.Forms.CheckBox.Create;
  Self.TextBox1 := System.Windows.Forms.TextBox.Create;
  Self.GroupBox2 := System.Windows.Forms.GroupBox.Create;
  Self.RadioButton3 := System.Windows.Forms.RadioButton.Create;
  Self.RadioButton2 := System.Windows.Forms.RadioButton.Create;
  Self.RadioButton1 := System.Windows.Forms.RadioButton.Create;
  Self.rtbTest := System.Windows.Forms.RichTextBox.Create;
  Self.GroupBox1.SuspendLayout;
  Self.GroupBox2.SuspendLayout;
  Self.SuspendLayout;
  // 
  // Label1
  // 
  Self.Label1.Location := System.Drawing.Point.Create(16, 32);
  Self.Label1.Name := 'Label1';
  Self.Label1.Size := System.Drawing.Size.Create(64, 16);
  Self.Label1.TabIndex := 0;
  Self.Label1.Text := '当前字体';
  // 
  // GroupBox1
  // 
  Self.GroupBox1.Controls.Add(Self.CheckBox3);
  Self.GroupBox1.Controls.Add(Self.CheckBox2);
  Self.GroupBox1.Controls.Add(Self.CheckBox1);
  Self.GroupBox1.Controls.Add(Self.TextBox1);
  Self.GroupBox1.Controls.Add(Self.Label1);
  Self.GroupBox1.Location := System.Drawing.Point.Create(8, 8);
  Self.GroupBox1.Name := 'GroupBox1';
  Self.GroupBox1.Size := System.Drawing.Size.Create(248, 112);
  Self.GroupBox1.TabIndex := 1;
  Self.GroupBox1.TabStop := False;
  Self.GroupBox1.Text := '文字样式';
  // 
  // CheckBox3
  // 
  Self.CheckBox3.Location := System.Drawing.Point.Create(168, 72);
  Self.CheckBox3.Name := 'CheckBox3';
  Self.CheckBox3.Size := System.Drawing.Size.Create(64, 24);
  Self.CheckBox3.TabIndex := 4;
  Self.CheckBox3.Text := '下划线';
  Include(Self.CheckBox3.CheckedChanged, Self.CheckBox3_CheckedChanged);
  // 
  // CheckBox2
  // 
  Self.CheckBox2.Location := System.Drawing.Point.Create(96, 72);
  Self.CheckBox2.Name := 'CheckBox2';
  Self.CheckBox2.Size := System.Drawing.Size.Create(56, 24);
  Self.CheckBox2.TabIndex := 3;
  Self.CheckBox2.Text := '斜体';
  Include(Self.CheckBox2.CheckedChanged, Self.CheckBox2_CheckedChanged);
  // 
  // CheckBox1
  // 
  Self.CheckBox1.Location := System.Drawing.Point.Create(24, 72);
  Self.CheckBox1.Name := 'CheckBox1';
  Self.CheckBox1.Size := System.Drawing.Size.Create(56, 24);
  Self.CheckBox1.TabIndex := 2;
  Self.CheckBox1.Text := '粗体';
  Include(Self.CheckBox1.CheckedChanged, Self.CheckBox1_CheckedChanged);
  // 
  // TextBox1
  // 
  Self.TextBox1.Location := System.Drawing.Point.Create(72, 24);
  Self.TextBox1.Name := 'TextBox1';
  Self.TextBox1.Size := System.Drawing.Size.Create(160, 21);
  Self.TextBox1.TabIndex := 1;
  Self.TextBox1.Text := '';
  // 
  // GroupBox2
  // 
  Self.GroupBox2.Controls.Add(Self.RadioButton3);
  Self.GroupBox2.Controls.Add(Self.RadioButton2);
  Self.GroupBox2.Controls.Add(Self.RadioButton1);
  Self.GroupBox2.Location := System.Drawing.Point.Create(264, 8);
  Self.GroupBox2.Name := 'GroupBox2';
  Self.GroupBox2.Size := System.Drawing.Size.Create(80, 112);
  Self.GroupBox2.TabIndex := 2;
  Self.GroupBox2.TabStop := False;
  Self.GroupBox2.Text := '段落格式';
  // 
  // RadioButton3
  // 
  Self.RadioButton3.Location := System.Drawing.Point.Create(8, 80);
  Self.RadioButton3.Name := 'RadioButton3';
  Self.RadioButton3.Size := System.Drawing.Size.Create(64, 24);
  Self.RadioButton3.TabIndex := 2;
  Self.RadioButton3.Text := '右对齐';
  Include(Self.RadioButton3.CheckedChanged, Self.RadioButton3_CheckedChanged);
  // 
  // RadioButton2
  // 
  Self.RadioButton2.Location := System.Drawing.Point.Create(8, 24);
  Self.RadioButton2.Name := 'RadioButton2';
  Self.RadioButton2.Size := System.Drawing.Size.Create(64, 24);
  Self.RadioButton2.TabIndex := 1;
  Self.RadioButton2.Text := '左对齐';
  Include(Self.RadioButton2.CheckedChanged, Self.RadioButton2_CheckedChanged);
  // 
  // RadioButton1
  // 
  Self.RadioButton1.Location := System.Drawing.Point.Create(8, 52);
  Self.RadioButton1.Name := 'RadioButton1';
  Self.RadioButton1.Size := System.Drawing.Size.Create(56, 24);
  Self.RadioButton1.TabIndex := 0;
  Self.RadioButton1.Text := '居中';
  Include(Self.RadioButton1.CheckedChanged, Self.RadioButton1_CheckedChanged);
  // 
  // rtbTest
  // 
  Self.rtbTest.Location := System.Drawing.Point.Create(8, 128);
  Self.rtbTest.Name := 'rtbTest';
  Self.rtbTest.Size := System.Drawing.Size.Create(336, 152);
  Self.rtbTest.TabIndex := 3;
  Self.rtbTest.Text := 'RichTextBox1';
  Include(Self.rtbTest.SelectionChanged, Self.rtbTest_SelectionChanged);
  // 
  // TWinForm
  // 
  Self.AutoScaleBaseSize := System.Drawing.Size.Create(6, 14);
  Self.ClientSize := System.Drawing.Size.Create(352, 285);
  Self.Controls.Add(Self.rtbTest);
  Self.Controls.Add(Self.GroupBox2);
  Self.Controls.Add(Self.GroupBox1);
  Self.Name := 'TWinForm';
  Self.Text := '简易文本编辑器';
  Self.GroupBox1.ResumeLayout(False);
  Self.GroupBox2.ResumeLayout(False);
  Self.ResumeLayout(False);
end;
{$ENDREGION}

procedure TWinForm.Dispose(Disposing: Boolean);
begin
  if Disposing then
  begin
    if Components <> nil then
      Components.Dispose();
  end;
  inherited Dispose(Disposing);
end;

constructor TWinForm.Create;
begin
  inherited Create;
  //
  // Required for Windows Form Designer support
  //
  InitializeComponent;
  //
  // TODO: Add any constructor code after InitializeComponent call
  //
end;

procedure TWinForm.RadioButton3_CheckedChanged(sender: System.Object; e: System.EventArgs);
begin
  if RadioButton3.Checked then
    rtbTest.SelectionAlignment := HorizontalAlignment.Right;
end;

procedure TWinForm.RadioButton2_CheckedChanged(sender: System.Object; e: System.EventArgs);
begin
  if RadioButton2.Checked then
    rtbTest.SelectionAlignment := HorizontalAlignment.Left ;
end;

procedure TWinForm.RadioButton1_CheckedChanged(sender: System.Object; e: System.EventArgs);
begin
  if RadioButton1.Checked then
    rtbTest.SelectionAlignment := HorizontalAlignment.Center;
end;

procedure TWinForm.CheckBox3_CheckedChanged(sender: System.Object; e: System.EventArgs);
var
  oldFont:System.Drawing.Font;
  NewFontStyle: FontStyle;
begin
  rtbTest.Focus;
  oldFont := rtbTest.SelectionFont;
  if CheckBox3.Checked then
    NewFontStyle := oldFont.Style or FontStyle.Underline
  else
    NewFontStyle := oldFont.Style xor FontStyle.Underline;
  rtbTest.SelectionFont := System.Drawing.Font.Create(oldFont.Name,
    oldFont.Size, NewFontStyle);
end;

procedure TWinForm.CheckBox2_CheckedChanged(sender: System.Object; e: System.EventArgs);
var
  oldFont:System.Drawing.Font;
  NewFontStyle: FontStyle;
begin
  rtbTest.Focus;
  oldFont := rtbTest.SelectionFont;
  if CheckBox2.Checked then
    NewFontStyle := oldFont.Style or FontStyle.Italic
  else
    NewFontStyle := oldFont.Style xor FontStyle.Italic;
  rtbTest.SelectionFont := System.Drawing.Font.Create(oldFont.Name,
    oldFont.Size, NewFontStyle);
end;

procedure TWinForm.rtbTest_SelectionChanged(sender: System.Object; e: System.EventArgs);
var
  oldFont:System.Drawing.Font;
  NewFontStyle: FontStyle;
begin
  rtbTest.Focus;
  oldFont := rtbTest.SelectionFont;
  CheckBox1.Checked :=oldFont.Bold;
  CheckBox2.Checked :=oldFont.Italic;
  CheckBox3.Checked :=oldFont.Underline;
  RadioButton1.Checked :=rtbTest.SelectionAlignment=HorizontalAlignment.Center;
  RadioButton2.Checked :=rtbTest.SelectionAlignment=HorizontalAlignment.Left;
  RadioButton3.Checked :=rtbTest.SelectionAlignment=HorizontalAlignment.Right;
end;

procedure TWinForm.CheckBox1_CheckedChanged(sender: System.Object; e: System.EventArgs);
var
  oldFont:System.Drawing.Font;
  NewFontStyle: FontStyle;
begin
  rtbTest.Focus;
  oldFont := rtbTest.SelectionFont;
  if CheckBox1.Checked then
    NewFontStyle := oldFont.Style or FontStyle.Bold
  else
    NewFontStyle := oldFont.Style xor FontStyle.Bold;
  rtbTest.SelectionFont := System.Drawing.Font.Create(oldFont.Name,
    oldFont.Size, NewFontStyle);
end;
end.