KWnd.cpp

#define _CRT_SECURE_NO_WARNINGS // чтобы компайлер не ругался насчет небезопасности сишного strcat

#include "KWnd.h"
#include <Windows.h>

KWnd::KWnd(LPCSTR windowName, HINSTANCE hInstance, int cmdShow,
    LRESULT(WINAPI *WndProc)(HWND, UINT, WPARAM, LPARAM),
    LPCSTR menuName, int x, int y, int width, int height,
    UINT classStyle, DWORD windowStyle, HWND hParent)
{
    char szClassName[] = "Class Name";

    wc.cbSize = sizeof(wc);
    wc.style = classStyle;
    wc.cbClsExtra = 0;
    wc.cbWndExtra = 0;
    wc.hInstance = hInstance;
    wc.hIcon = LoadIcon(NULL, IDI_APPLICATION);
    wc.hCursor = LoadIcon(NULL, IDC_ARROW);
    wc.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH);
    wc.lpszMenuName = menuName;
    wc.lpszClassName = szClassName;
    wc.hIconSm = LoadIcon(NULL, IDI_APPLICATION);

    if (!RegisterClassEx(&wc)) {
        char msg[100] = "Cannot register class: ";
        strcat(msg, szClassName);
        MessageBox(NULL, msg, "Error", MB_OK);
        return;
    }

    hWnd = CreateWindow(szClassName, windowName, windowStyle,
        x, y, width, height, hParent, (HMENU)NULL, hInstance, NULL);

    if (!hWnd) {
        char msg[100] = "Cannot create window: ";
        strcat(msg, windowName);
        MessageBox(NULL, msg, "Error", MB_OK);
        return;
    }

    ShowWindow(hWnd, cmdShow);
}