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;
}
|