How do i create edit control in win32 and c++ using object oriented techniques

To create an edit control in Win32 using C++ with object-oriented techniques, you can follow these steps:

1. Create a Class for the Edit Control:
   Start by defining a class for the edit control. This class will encapsulate the creation and management of the edit control.

   cppCopy code
   // EditControl.h
   
   #pragma once
   
   #include <windows.h>
   
   
   
   class EditControl {
   
   public:
   
       EditControl(HWND parentWnd, int x, int y, int width, int height);
   
       void SetText(const wchar_t* text);
   
       wchar_t* GetText();
   
       void Show();
   
   private:
   
       HWND hwndEdit;
   
   };
   
   

2. Implement the Class Methods:
   Implement the methods of the EditControl class in a separate source file.

   cppCopy code
   // EditControl.cpp
   
   #include "EditControl.h"
   
   
   
   EditControl::EditControl(HWND parentWnd, int x, int y, int width, int height) {
   
       hwndEdit = CreateWindowW(L"EDIT", L"",
   
           WS_VISIBLE | WS_CHILD | WS_BORDER | ES_AUTOHSCROLL,
   
           x, y, width, height, parentWnd, NULL, GetModuleHandle(NULL), NULL);
   
   }
   
   
   
   void EditControl::SetText(const wchar_t* text) {
   
       SetWindowTextW(hwndEdit, text);
   
   }
   
   
   
   wchar_t* EditControl::GetText() {
   
       int textLength = GetWindowTextLengthW(hwndEdit) + 1;
   
       wchar_t* buffer = new wchar_t[textLength];
   
       GetWindowTextW(hwndEdit, buffer, textLength);
   
       return buffer;
   
   }
   
   
   
   void EditControl::Show() {
   
       ShowWindow(hwndEdit, SW_SHOW);
   
   }
   
   

3. Use the Edit Control in Your Main Code:
   In your main code, create an instance of the EditControl class and use its methods to create and interact with the edit control.

   cppCopy code
   #include <windows.h>
   
   #include "EditControl.h"
   
   
   
   LRESULT CALLBACK WndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam) {
   
       switch (msg) {
   
           case WM_CREATE:
   
               {
   
                   EditControl editControl(hwnd, 10, 10, 200, 25);
   
                   editControl.SetText(L"Hello, World!");
   
                   editControl.Show();
   
               }
   
               break;
   
           case WM_CLOSE:
   
               DestroyWindow(hwnd);
   
               break;
   
           case WM_DESTROY:
   
               PostQuitMessage(0);
   
               break;
   
           default:
   
               return DefWindowProc(hwnd, msg, wParam, lParam);
   
       }
   
       return 0;
   
   }
   
   
   
   int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow) {
   
       // ... Register window class, create window, etc.
   
       // Start message loop
   
   }
   
   

In this example, the EditControl class encapsulates the creation, setting of text, getting text, and showing of the edit control. This allows you to use object-oriented techniques to manage the edit control's behavior.

Note that this is a simplified example for illustrative purposes. In a real application, you would need to handle memory allocation and deallocation properly, error checking, and more. Additionally, you may want to create separate classes for other types of controls and encapsulate common functionality in base classes.