كيفية عمل نافذة متحركة في win32 ++C

#include<windows.h>

#define BUTTON_MOVE 1

int positionX;
int positionY;

LRESULT CALLBACK WindowProcedure(HWND, UINT, WPARAM, LPARAM);

int WINAPI WinMain(HINSTANCE hInst, HINSTANCE hpreventInst, LPSTR args,
                   int ncmdshow) {
    WNDCLASSW wc = {0};
    wc.hbrBackground = (HBRUSH)COLOR_WINDOW;
    wc.hCursor = LoadCursor(NULL, IDC_ARROW);
    wc.hInstance = hInst;
    wc.lpszClassName = L"myWindows";
    wc.lpfnWndProce = WindowProcedure;

    if (!RegisterClassW(&wc)) {
        return -1;
    }

    CreatWindowW(L"myWindows", L"Window", WS_VISIBLE | WS_OVERLAPPEDWINDOW,
                 positionX, positionY, 500, 500, NULL, NULL, NULL, NULL);

    MSG msg = {0};

    while (GetMessageW(&msg, NULL, NULL, NULL)) {
        TranslateMessage(&msg);
        DispatchMessage(&msg);
    }

    return 0;
}

LRESULT CALLBACK WindowProcedure(HWND hWnd, UINT msg, WPARAM wp, LPARAM lp) {
    switch (msg) {
        case WM_COMMAND:

            switch (wp) {
                case BUTTON_MOVE:
                    positionX += 50;
                    break;
            }
            break;
        case WM_CREATE:
            CreateWindowW(L"myWindows", L"MOVE",
                          WS_VISIBLE | WS_OVERLAPPEDWINDOW, 200, 200, 200, 200,
                          hWnd, (HMENU)BUTTON_MOVE, NULL, NULL, NULL);
            break;
        case WM_DESTROY:
            PostQuitMessage(0);
            break;
        default:
            return DefWindowProcW(hWnd, msg, wp, lp);
            break;
    }
}