Visual C++ .NET/GUI Form/CheckBoxListBox

ListBox and CheckBoxListBox

 
  using namespace System;
  using namespace System::ComponentModel;
  using namespace System::Collections;
  using namespace System::Windows::Forms;
  using namespace System::Data;
  using namespace System::Drawing;
  public ref class Form1 : public System::Windows::Forms::Form
  {
  public:
    Form1(void)
    {
      InitializeComponent();
            array<Object^>^ Items = gcnew array<Object^> { 
                "Appleman", "Challa",    "Chand",    "Cornell",
                "Fraser",   "Gunnerson", "Harris",   "Rammer", 
                "Symmonds", "Thomsen",   "Troelsen", "Vaughn" 
            };
            clBox->Items->AddRange(Items);
            lBox->Items->AddRange(Items);
            cBox = gcnew array<CheckBox^>(Items->Length); 
            
            int j = cBox->Length/2;
            for (int i = 0; i < j; i++)
            {
                // Build Left Column
                cBox[i] = gcnew CheckBox();
                cBox[i]->Location = Drawing::Point(50, 160+(30*i)); 
                cBox[i]->TabIndex = i+2; 
                cBox[i]->Text = Items[i]->ToString(); 
                cBox[i]->CheckStateChanged += 
                    gcnew EventHandler(this, &Form1::cBox_CheckStateChanged); 
                
                // Build Right Column
                cBox[i+j] = gcnew CheckBox();
                cBox[i+j]->Location = Drawing::Point(180, 160+(30*i)); 
                cBox[i+j]->TabIndex = i+j+2; 
                cBox[i+j]->Text = Items[i+j]->ToString(); 
                cBox[i+j]->CheckStateChanged += 
                    gcnew EventHandler(this, &Form1::cBox_CheckStateChanged); 
            }
            // Add all CheckBoxes to Form
            Controls->AddRange(cBox);
  }
  private:
        System::Windows::Forms::ListBox^  lBox;
        System::Windows::Forms::CheckedListBox^  clBox;
        array<CheckBox^>^ cBox; 
    void InitializeComponent(void)
    {
      this->lBox = (gcnew System::Windows::Forms::ListBox());
      this->clBox = (gcnew System::Windows::Forms::CheckedListBox());
      this->SuspendLayout();
      // 
      // lBox
      // 
      this->lBox->FormattingEnabled = true;
      this->lBox->Location = System::Drawing::Point(356, 32);
      this->lBox->Name = L"lBox";
      this->lBox->Size = System::Drawing::Size(120, 264);
      this->lBox->TabIndex = 3;
      this->lBox->SelectedIndexChanged += gcnew System::EventHandler(this, &Form1::lBox_SelectedIndexChanged);
      // 
      // clBox
      // 
      this->clBox->FormattingEnabled = true;
      this->clBox->Location = System::Drawing::Point(12, 32);
      this->clBox->MultiColumn = true;
      this->clBox->Name = L"clBox";
      this->clBox->Size = System::Drawing::Size(323, 79);
      this->clBox->TabIndex = 2;
      this->clBox->ThreeDCheckBoxes = true;
      this->clBox->SelectedIndexChanged += gcnew System::EventHandler(this, &Form1::clBox_SelectedIndexChanged);
      this->clBox->ItemCheck += gcnew System::Windows::Forms::ItemCheckEventHandler(this, &Form1::clBox_ItemCheck);
      // 
      // Form1
      // 
      this->AutoScaleDimensions = System::Drawing::SizeF(6, 13);
      this->AutoScaleMode = System::Windows::Forms::AutoScaleMode::Font;
      this->ClientSize = System::Drawing::Size(494, 392);
      this->Controls->Add(this->lBox);
      this->Controls->Add(this->clBox);
      this->Name = L"Form1";
      this->Text = L"Splitting The Check List Box";
      this->ResumeLayout(false);
    }
            System::Void clBox_ItemCheck(System::Object^ sender, 
                                 System::Windows::Forms::ItemCheckEventArgs^ e)
        {
         // update state of CheckBox with same index as checked CheckedListBox
            cBox[e->Index]->CheckState = e->NewValue; 
        }
        System::Void clBox_SelectedIndexChanged(System::Object^ sender, 
                                                System::EventArgs^ e)
        {
         // update ListBox with same selected item in the CheckedListBox
            lBox->SelectedItem = clBox->SelectedItem->ToString(); 
        }
        System::Void lBox_SelectedIndexChanged(System::Object^ sender, 
                                               System::EventArgs^ e)
        {
         // update CheckedListBox with same selected item in the ListBox
            clBox->SelectedItem = lBox->SelectedItem; 
        }
        void cBox_CheckStateChanged(Object^ sender, EventArgs^ e) 
        {
         // update state of CheckedListBox with same index as checked CheckBox
            CheckBox^ cb = (CheckBox^)sender;
            clBox->SetItemCheckState(Array::IndexOf(cBox, cb), cb->CheckState);
        }
  };
[STAThreadAttribute]
int main(array<System::String ^> ^args)
{
  Application::Run(gcnew Form1());
  return 0;
}