viewlist exaple win32

To create a viewlist example in C++ using Win32, follow these steps:

1. Include the necessary header files:

#include <windows.h>

1. Declare the global variables:

HWND hListBox;
HWND hWnd;

1. Define the window procedure:

LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
    switch (message)
    {
        case WM_CREATE:
            hListBox = CreateWindowEx(WS_EX_CLIENTEDGE, "LISTBOX", NULL, WS_CHILD | WS_VISIBLE | LBS_STANDARD, 10, 10, 200, 200, hWnd, NULL, GetModuleHandle(NULL), NULL);
            break;
        case WM_DESTROY:
            PostQuitMessage(0);
            break;
        default:
            return DefWindowProc(hWnd, message, wParam, lParam);
    }
    return 0;
}

1. Define the WinMain function:

int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)
{
    WNDCLASSEX wc;
    ZeroMemory(&wc, sizeof(WNDCLASSEX));
    wc.cbSize = sizeof(WNDCLASSEX);
    wc.lpfnWndProc = WndProc;
    wc.hInstance = hInstance;
    wc.hCursor = LoadCursor(NULL, IDC_ARROW);
    wc.lpszClassName = "WindowClass";
    RegisterClassEx(&wc);

    hWnd = CreateWindowEx(0, "WindowClass", "Viewlist Example", WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, CW_USEDEFAULT, 240, 300, NULL, NULL, hInstance, NULL);

    ShowWindow(hWnd, nCmdShow);
    UpdateWindow(hWnd);

    MSG msg;
    while (GetMessage(&msg, NULL, 0, 0))
    {
        TranslateMessage(&msg);
        DispatchMessage(&msg);
    }

    return msg.wParam;
}

1. Compile and run the program.

This code sets up a basic window using Win32 API and creates a listbox control. The listbox control is created in the WM_CREATE message handler of the window procedure. The WinMain function registers a window class, creates a window, and enters the message loop to handle window messages.

Please note that this is a simplified example and does not include error handling or additional functionality. It's recommended to refer to the official Microsoft documentation or other C++ resources for a more comprehensive understanding of Win32 programming.