Windows Form Anwendungstaste doesent Arbeit

Question

ich eine neue Windows Forms-Anwendung gemacht habe, und ich versuchte, einen Knopf zu machen zwei Zahlen zu multiplizieren, aber die Schaltfläche doesent Arbeit ... Das ist MyForm.cpp

#include "MyForm.h" 

using namespace System; 
using namespace System::Windows::Forms; 
[STAThread] 
void Main(array<String^>^ args) 
{ 
Application::EnableVisualStyles(); 
Application::SetCompatibleTextRenderingDefault(false); 

Project5::MyForm form; 
Application::Run(%form); 
} 

myForm.h

#pragma once 

namespace Project5 { 

using namespace System; 
using namespace System::ComponentModel; 
using namespace System::Collections; 
using namespace System::Windows::Forms; 
using namespace System::Data; 
using namespace System::Drawing; 

/// <summary> 
/// Summary for MyForm 
/// </summary> 
public ref class MyForm : public System::Windows::Forms::Form 
{ 
public: 
    MyForm(void) 
    { 
     InitializeComponent(); 
     // 
     //TODO: Add the constructor code here 
     // 
    } 

protected: 
    /// <summary> 
    /// Clean up any resources being used. 
    /// </summary> 
    ~MyForm() 
    { 
     if (components) 
     { 
      delete components; 
     } 
    } 
private: System::Windows::Forms::Button^ button1; 
private: System::Windows::Forms::TextBox^ textBox1; 
private: System::Windows::Forms::TextBox^ textBox2; 
private: System::Windows::Forms::TextBox^ textBox3; 
protected: 

private: 
    /// <summary> 
    /// Required designer variable. 
    /// </summary> 
    System::ComponentModel::Container ^components; 

#pragma 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> 
    void InitializeComponent(void) 
    { 
     this->button1 = (gcnew System::Windows::Forms::Button()); 
     this->textBox1 = (gcnew System::Windows::Forms::TextBox()); 
     this->textBox2 = (gcnew System::Windows::Forms::TextBox()); 
     this->textBox3 = (gcnew System::Windows::Forms::TextBox()); 
     this->SuspendLayout(); 
     // 
     // button1 
     // 
     this->button1->Location = System::Drawing::Point(148, 169); 
     this->button1->Name = L"button1"; 
     this->button1->Size = System::Drawing::Size(75, 23); 
     this->button1->TabIndex = 0; 
     this->button1->Text = L"button1"; 
     this->button1->UseVisualStyleBackColor = true; 
     // 
     // textBox1 
     // 
     this->textBox1->Location = System::Drawing::Point(35, 27); 
     this->textBox1->Name = L"textBox1"; 
     this->textBox1->Size = System::Drawing::Size(100, 22); 
     this->textBox1->TabIndex = 1; 
     this->textBox1->Text = L"1"; 
     // 
     // textBox2 
     // 
     this->textBox2->Location = System::Drawing::Point(35, 65); 
     this->textBox2->Name = L"textBox2"; 
     this->textBox2->Size = System::Drawing::Size(100, 22); 
     this->textBox2->TabIndex = 2; 
     this->textBox2->Text = L"2"; 
     // 
     // textBox3 
     // 
     this->textBox3->Location = System::Drawing::Point(35, 109); 
     this->textBox3->Name = L"textBox3"; 
     this->textBox3->Size = System::Drawing::Size(100, 22); 
     this->textBox3->TabIndex = 3; 
     // 
     // MyForm 
     // 
     this->AutoScaleDimensions = System::Drawing::SizeF(8, 16); 
     this->AutoScaleMode = System::Windows::Forms::AutoScaleMode::Font; 
     this->ClientSize = System::Drawing::Size(282, 253); 
     this->Controls->Add(this->textBox3); 
     this->Controls->Add(this->textBox2); 
     this->Controls->Add(this->textBox1); 
     this->Controls->Add(this->button1); 
     this->Name = L"MyForm"; 
     this->Text = L"MyForm"; 
     this->ResumeLayout(false); 
     this->PerformLayout(); 

    } 
#pragma endregion 
private: System::Void button1_Click(System::Object^ sender, System::EventArgs^ e) { 
    int a, b, c; 
    a = System::Convert::ToInt16(textBox1->Text); 
    b = System::Convert::ToInt16(textBox2->Text); 
    c = b + a; 
    textBox3->Text = System::Convert::ToString(c); 
    } 
}; 

}

die Anwendung starten, aber wenn ich die Taste nichts drücken passiert Jeder Vorschlag?

Answer 1

Ihre Schaltfläche Designer-Code nicht über diese Linie haben:

this->button1->Click += gcnew System::EventHandler(this, &Form1::button1_Click); 

Wenn Sie einen Doppelklick auf die Schaltfläche in der visuellen Designer sollte dies für Sie hinzufügen. Wenn es nicht nur diese Zeile hinzugefügt und der Button-Handler sollte korrekt angeschlossen sein.