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Categories / Visual C++ .NET / GUI Form

 

Sync ComboBox

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();             PopulateLists();     }         System::Windows::Forms::ComboBox^  ddlist;         System::Windows::Forms::ComboBox^  simple;         System::Windows::Forms::ComboBox^  ddown;     void InitializeComponent(void)     {             this->ddlist = (gcnew System::Windows::Forms::ComboBox());             this->simple = (gcnew System::Windows::Forms::ComboBox());             this->ddown = (gcnew System::Windows::Forms::ComboBox());             this->SuspendLayout();             //              // ddlist             //              this->ddlist->DropDownStyle =                  System::Windows::Forms::ComboBoxStyle::DropDownList;             this->ddlist->FormattingEnabled = true;             this->ddlist->Location = System::Drawing::Point(300, 14);             this->ddlist->Name = L"ddlist";             this->ddlist->Size = System::Drawing::Size(121, 21);             this->ddlist->TabIndex = 5;             this->ddlist->SelectedIndexChanged +=                  gcnew System::EventHandler(this, &Form1::ddlist_Change);             //              // simple             //              this->simple->DropDownStyle =                  System::Windows::Forms::ComboBoxStyle::Simple;             this->simple->FormattingEnabled = true;             this->simple->Location = System::Drawing::Point(154, 11);             this->simple->Name = L"simple";             this->simple->Size = System::Drawing::Size(122, 117);             this->simple->TabIndex = 4;             this->simple->SelectedIndexChanged +=                  gcnew System::EventHandler(this, &Form1::simple_Change);             this->simple->TextChanged +=                  gcnew System::EventHandler(this, &Form1::simple_Change);             //              // ddown             //              this->ddown->FormattingEnabled = true;             this->ddown->Location = System::Drawing::Point(12, 14);             this->ddown->MaxDropDownItems = 3;             this->ddown->MaxLength = 10;             this->ddown->Name = L"ddown";             this->ddown->Size = System::Drawing::Size(121, 21);             this->ddown->TabIndex = 3;             this->ddown->SelectedIndexChanged +=                  gcnew System::EventHandler(this, &Form1::ddown_Change);             this->ddown->TextChanged +=                  gcnew System::EventHandler(this, &Form1::ddown_Change);             //              // Form1             //              this->AutoScaleDimensions = System::Drawing::SizeF(6, 13);             this->AutoScaleMode = System::Windows::Forms::AutoScaleMode::Font;             this->ClientSize = System::Drawing::Size(433, 138);             this->Controls->Add(this->ddlist);             this->Controls->Add(this->simple);             this->Controls->Add(this->ddown);             this->Name = L"Form1";             this->Text = L"Synchronized Combo boxing";             this->ResumeLayout(false);     }         void PopulateLists()         {             // Item to be placed in all ComboBoxes             array<Object^>^ ddItems = gcnew array<Object^> {                  L"oranges", L"cherries", L"apples",                 L"lemons",  L"bananas",  L"grapes"              };             ddown->Items->AddRange(ddItems);                     simple->Items->AddRange(ddItems);                     ddlist->Items->AddRange(ddItems);         }         System::Void ddown_Change(System::Object^ sender, System::EventArgs^ e)         {             // Update simple and dropdownlist with dropdown text             simple->Text = ddown->Text;              ddlist->SelectedItem = ddown->Text;          }         System::Void simple_Change(System::Object^ sender,System::EventArgs^ e)         {             // Update dropdown and dropdownlist with simple text             ddown->Text = simple->Text;              ddlist->SelectedItem = simple->Text;          }         System::Void ddlist_Change(System::Object^ sender,System::EventArgs^ e)         {             // Update simple and dropdown with dropdownlist SelectedText             ddown->SelectedItem = ddlist->SelectedItem;              simple->SelectedItem = ddlist->SelectedItem;          }   }; [STAThreadAttribute] int main(array<System::String ^> ^args) {   Application::Run(gcnew Form1());   return 0; }