after.cpp

//
// KlutzMiniApp.cpp
//

#include "targetver.h"
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#include <stdlib.h>
#include <malloc.h>
#include <memory.h>
#include <tchar.h>

// Include a resource file header which links the CPP to the RC by means of shared definitions

#include "resource.h"

// Global Variables

HINSTANCE hInst;                     // Current Instance Handle
WCHAR     szTitle[MAX_PATH];         // Title Bar Text
WCHAR     szWindowClass[MAX_PATH];  // The main window class name

// Forward decl's of functions

// ATOM              MyRegisterClass(HINSTANCE); // By executive decision of Dave!!!
// BOOL              InitInstance(HINSTANCE, int); // By executive decision of Dave!!!
LRESULT CALLBACK  WndProc(HWND, UINT, WPARAM, LPARAM);
INT_PTR CALLBACK  About(HWND, UINT, WPARAM, LPARAM);

// Main Entry Point for the program

int APIENTRY wWinMain(_In_       HINSTANCE hInstance,
                      _In_opt_   HINSTANCE hPrevInstance,
                      _In_       LPWSTR    lpCmdLine,
                      _In_       int       nCmdShow)
{
        

        // Load local strings

        LoadStringW(hInstance, IDS_APP_TITLE, szTitle, MAX_PATH);
        LoadStringW(hInstance, IDC_KLUTZMINIAPP, szWindowClass, MAX_PATH);
        // MyRegisterClass(hInstance);  // By executive decision of Dave!!!

        HACCEL hAccelTable = LoadAccelerators(hInstance, MAKEINTRESOURCE(IDC_KLUTZMINIAPP));

        WNDCLASSEXW wcex = { sizeof(WNDCLASSEX) };
        wcex.style           = CS_HREDRAW | CS_VREDRAW;
        wcex.lpfnWndProc     = WndProc;
        wcex.cbClsExtra      = 0;
        wcex.cbWndExtra      = 0;
        wcex.hInstance       = hInstance;
        wcex.hIcon           = LoadIcon(hInstance, MAKEINTRESOURCE(IDI_KLUTZMINIAPP));
        wcex.hCursor         = LoadCursor(nullptr, IDC_ARROW);
        wcex.hbrBackground   = (HBRUSH)(COLOR_WINDOW + 1);
        wcex.lpszMenuName    = MAKEINTRESOURCE(IDC_KLUTZMINIAPP);
        wcex.lpszClassName   = szWindowClass;
        wcex.hIconSm         = LoadIcon(hInstance, MAKEINTRESOURCE(IDI_SMALL));

        if (0 == RegisterClassExW(&wcex))
            return FALSE;
        
        hInst = hInstance;

        HWND hWnd = CreateWindow(szWindowClass,
                                 szTitle,
                                 WS_OVERLAPPEDWINDOW,
                                 CW_USEDEFAULT,
                                 0,
                                 CW_USEDEFAULT,
                                 0,
                                 nullptr,
                                 nullptr,
                                 hInstance,
                                 nullptr);
        
        if (!hWnd)
            return FALSE;

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

        // Pump the message queue

        MSG msg;
        while (GetMessage(&msg, nullptr, 0, 0))
        {
            if(!TranslateAccelerator(msg.hwnd, hAccelTable, &msg))
            {
                TranslateMessage(&msg); // Dave annotated to fix already from %msg to &msg
                DispatchMessage(&msg);
            }
        }

        // Use the wParam of the last sccessfully processed message as the return code

        return (int) msg.wParam;
}

// WndProc (HWND, UINT, WPARAM, LPARAM)
//
// Process window messages for the main window
//
// WM_COMMAND    Process the app menu
// WM_PAINT      Paint the main menu
// WM_DESTROY    Post a quit message, then return

LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
    switch (message)
    {
        case WM_COMMAND:
        {
            int wmId = LOWORD(wParam);
            // Parse out menu selections
            switch (wmId)
            {
                case IDM_ABOUT:
                    DialogBox(hInst, MAKEINTRESOURCE(IDD_ABOUTBOX), hWnd, About);
                    break;
                case IDM_EXIT:
                    DestroyWindow(hWnd);
                    break;
                default:
                    return DefWindowProc(hWnd, message, wParam, lParam);
            }
            break;
        }
        
        case WM_PAINT:
        {
            PAINTSTRUCT ps;
            RECT rect;
            HDC hdc = BeginPaint(hWnd, &ps);

            GetClientRect(hWnd, &rect);

            DrawText(hdc, L"Klutz Tiny App!", -1, &rect, DT_SINGLELINE | DT_CENTER | DT_VCENTER);

            EndPaint(hWnd, &ps);
            break;
        }

        case WM_DESTROY:
            PostQuitMessage(0);
            break;

        default:
            return DefWindowProc(hWnd, message, wParam, lParam);

    }
    return 0;
}

//
// About - Message Handler for the About dialog box.
//


INT_PTR CALLBACK About(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam)
{
    switch (message)
    {
        case WM_INITDIALOG:
            return (INT_PTR) TRUE;

        case WM_COMMAND:
            if(LOWORD(wParam) == IDOK || LOWORD(wParam) == IDCANCEL)
            {
                EndDialog(hDlg, LOWORD(wParam));
                return (INT_PTR)TRUE;
            }
            break;
    }
    return (INT_PTR) FALSE;
}