Access to another class object

Question

There is a class Source.h

#pragma once #include "logic.h" namespace tetstst { class Sourse{ public: Sourse(); logic player1; }; }

Source.cpp assigns player1 parameters

 #include "Sourse.h" namespace tetstst { tetstst::Sourse::Sourse() { player1.setName("ARRA"); player1.setScore(20); } }

The logic class itself looks like this

 #pragma once namespace tetstst { class logic { private: int score; char* name; public: logic(); void setScore(int score); int getScore(); void setName(char*); char* getName(); ~logic(); }; }

And now to the point. There is a window with a textBox in which you want to display the Score value for player1 . If in the class in which the window elements are created write

 textBox1->Text = player1.getScore();

then nothing will come of it. And in this class player1 not available. What should be done?

Code MyForm.h

 #pragma once #include "Sourse.h" namespace tetstst { 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> /// Сводка для MyForm /// </summary> public ref class MyForm : public System::Windows::Forms::Form{ public: MyForm(void){ InitializeComponent(); // //TODO: добавьте код конструктора // } protected: /// <summary> /// Освободить все используемые ресурсы. /// </summary> ~MyForm() { if (components) { delete components; } } private: System::Windows::Forms::TextBox^ textBox1; protected: private: System::Windows::Forms::Button^ button1; private: System::Windows::Forms::Button^ button2; private: /// <summary> /// Обязательная переменная конструктора. /// </summary> System::ComponentModel::Container ^components; #pragma region Windows Form Designer generated code /// <summary> /// Требуемый метод для поддержки конструктора — не изменяйте /// содержимое этого метода с помощью редактора кода. /// </summary> void InitializeComponent(void) { this->textBox1 = (gcnew System::Windows::Forms::TextBox()); this->button1 = (gcnew System::Windows::Forms::Button()); this->button2 = (gcnew System::Windows::Forms::Button()); this->SuspendLayout(); // // textBox1 // this->textBox1->Font = (gcnew System::Drawing::Font(L"Microsoft Sans Serif", 12, System::Drawing::FontStyle::Regular, System::Drawing::GraphicsUnit::Point, static_cast<System::Byte>(204))); this->textBox1->Location = System::Drawing::Point(104, 52); this->textBox1->Multiline = true; this->textBox1->Name = L"textBox1"; this->textBox1->Size = System::Drawing::Size(264, 54); this->textBox1->TabIndex = 0; this->textBox1->TextAlign = System::Windows::Forms::HorizontalAlignment::Center; this->textBox1->TextChanged += gcnew System::EventHandler(this, &MyForm::textBox1_TextChanged); this->textBox1->KeyPress += gcnew System::Windows::Forms::KeyPressEventHandler(this, &MyForm::textBox1_KeyPress); // // button1 // this->button1->Location = System::Drawing::Point(104, 125); this->button1->Name = L"button1"; this->button1->Size = System::Drawing::Size(124, 50); this->button1->TabIndex = 1; this->button1->Text = L"+1"; this->button1->UseVisualStyleBackColor = true; this->button1->Click += gcnew System::EventHandler(this, &MyForm::button1_Click); // // button2 // this->button2->Location = System::Drawing::Point(244, 125); this->button2->Name = L"button2"; this->button2->Size = System::Drawing::Size(124, 50); this->button2->TabIndex = 2; this->button2->Text = L"-1"; this->button2->UseVisualStyleBackColor = true; // // MyForm // this->AutoScaleDimensions = System::Drawing::SizeF(8, 16); this->AutoScaleMode = System::Windows::Forms::AutoScaleMode::Font; this->ClientSize = System::Drawing::Size(474, 249); this->Controls->Add(this->button2); this->Controls->Add(this->button1); this->Controls->Add(this->textBox1); this->Name = L"MyForm"; this->Text = L"Fucking nigger"; this->Load += gcnew System::EventHandler(this, &MyForm::MyForm_Load); this->ResumeLayout(false); this->PerformLayout(); } #pragma endregion private: System::Void MyForm_Load(System::Object^ sender, System::EventArgs^ e) { } private: System::Void button1_Click(System::Object^ sender, System::EventArgs^ e) { /*textBox1->Text = "123";*/ } private: System::Void button2_Click(System::Object^ sender, System::EventArgs^ e) { } private: System::Void textBox1_TextChanged(System::Object^ sender, System::EventArgs^ e) { } private: System::Void textBox1_KeyPress(System::Object^ sender, System::Windows::Forms::KeyPressEventArgs^ e) { char number = e->KeyChar; if (!Char::IsDigit(number)){ e->Handled = true; } } }; } "; #pragma once #include "Sourse.h" namespace tetstst { 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> /// Сводка для MyForm /// </summary> public ref class MyForm : public System::Windows::Forms::Form{ public: MyForm(void){ InitializeComponent(); // //TODO: добавьте код конструктора // } protected: /// <summary> /// Освободить все используемые ресурсы. /// </summary> ~MyForm() { if (components) { delete components; } } private: System::Windows::Forms::TextBox^ textBox1; protected: private: System::Windows::Forms::Button^ button1; private: System::Windows::Forms::Button^ button2; private: /// <summary> /// Обязательная переменная конструктора. /// </summary> System::ComponentModel::Container ^components; #pragma region Windows Form Designer generated code /// <summary> /// Требуемый метод для поддержки конструктора — не изменяйте /// содержимое этого метода с помощью редактора кода. /// </summary> void InitializeComponent(void) { this->textBox1 = (gcnew System::Windows::Forms::TextBox()); this->button1 = (gcnew System::Windows::Forms::Button()); this->button2 = (gcnew System::Windows::Forms::Button()); this->SuspendLayout(); // // textBox1 // this->textBox1->Font = (gcnew System::Drawing::Font(L"Microsoft Sans Serif", 12, System::Drawing::FontStyle::Regular, System::Drawing::GraphicsUnit::Point, static_cast<System::Byte>(204))); this->textBox1->Location = System::Drawing::Point(104, 52); this->textBox1->Multiline = true; this->textBox1->Name = L"textBox1"; this->textBox1->Size = System::Drawing::Size(264, 54); this->textBox1->TabIndex = 0; this->textBox1->TextAlign = System::Windows::Forms::HorizontalAlignment::Center; this->textBox1->TextChanged += gcnew System::EventHandler(this, &MyForm::textBox1_TextChanged); this->textBox1->KeyPress += gcnew System::Windows::Forms::KeyPressEventHandler(this, &MyForm::textBox1_KeyPress); // // button1 // this->button1->Location = System::Drawing::Point(104, 125); this->button1->Name = L"button1"; this->button1->Size = System::Drawing::Size(124, 50); this->button1->TabIndex = 1; this->button1->Text = L"+1"; this->button1->UseVisualStyleBackColor = true; this->button1->Click += gcnew System::EventHandler(this, &MyForm::button1_Click); // // button2 // this->button2->Location = System::Drawing::Point(244, 125); this->button2->Name = L"button2"; this->button2->Size = System::Drawing::Size(124, 50); this->button2->TabIndex = 2; this->button2->Text = L"-1"; this->button2->UseVisualStyleBackColor = true; // // MyForm // this->AutoScaleDimensions = System::Drawing::SizeF(8, 16); this->AutoScaleMode = System::Windows::Forms::AutoScaleMode::Font; this->ClientSize = System::Drawing::Size(474, 249); this->Controls->Add(this->button2); this->Controls->Add(this->button1); this->Controls->Add(this->textBox1); this->Name = L"MyForm"; this->Text = L"Fucking nigger"; this->Load += gcnew System::EventHandler(this, &MyForm::MyForm_Load); this->ResumeLayout(false); this->PerformLayout(); } #pragma endregion private: System::Void MyForm_Load(System::Object^ sender, System::EventArgs^ e) { } private: System::Void button1_Click(System::Object^ sender, System::EventArgs^ e) { /*textBox1->Text = "123";*/ } private: System::Void button2_Click(System::Object^ sender, System::EventArgs^ e) { } private: System::Void textBox1_TextChanged(System::Object^ sender, System::EventArgs^ e) { } private: System::Void textBox1_KeyPress(System::Object^ sender, System::Windows::Forms::KeyPressEventArgs^ e) { char number = e->KeyChar; if (!Char::IsDigit(number)){ e->Handled = true; } } }; }

Did not quite understand the question, but the textBox was created with the help of the designer
Well, you have nowhere in the code to declare this textbox itself.
Well, I do not quite understand the phrase “with the help of the constructor” - maybe show the code of this constructor itself?
If we are talking about "managed" with ++, player1.getScore () needs to be converted to "string" before assignment
The bottom line is that you cannot get access to player1, he just does not see him

Accepted Answer · 2017-01-11T12:46:47

In your case, player1 is a variable of the Sourse class Sourse . To get the variable player1 , you need to create an object of the Sourse class.

Also your classes should be in the form of cli classes.

 public ref class Sourse{ public: Sourse(); logic player1; }; public ref class logic { private: int score; char* name; public: logic(); void setScore(int score); int getScore(); void setName(char*); char* getName(); ~logic(); }; Sourse^ sourse = gcnew Sourse(); textBox1->Text = sourse->player1.getScore();

I understood the essence, but when adding Sourse sourse = new Sourse();
begins to emphasize as an error source and generate an error "a member of a class that is managed cannot belong to a class that is not managed"
ah, yes, the class should be special for the CLI, now I’ll correct the answer
Something went wrong again in the form of underlined gcnew and the error "there is no suitable user-defined conversion from" tetstst :: Sourse ^ "to" tetstst :: Sourse "
Well, still corrected, try so, for a long time did not work with cli

Access to another class object

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