Как изменить цвет и форму кнопки в winAPI?

 #include  
#include  
#include  
#include  
 
#define ID_BTN 1 
 
static TCHAR szWindowClass[] = _T("DesktopApp"); 
static TCHAR szTitle[] = _T("Калькулятор"); 
 
HINSTANCE hInst; 
 
LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM); 
 
int WINAPI WinMain( 
    _In_ HINSTANCE hInstance, 
    _In_opt_ HINSTANCE hPrevInstance, 
    _In_ LPSTR     lpCmdLine, 
    _In_ int       nCmdShow 
) 
{ 
    WNDCLASSEX wcex; 
 
    wcex.cbSize = sizeof(WNDCLASSEX); 
    wcex.style = CS_HREDRAW | CS_VREDRAW; 
    wcex.lpfnWndProc = WndProc; 
    wcex.cbClsExtra = 0; 
    wcex.cbWndExtra = 0; 
    wcex.hInstance = hInstance; 
    wcex.hIcon = LoadIcon(wcex.hInstance, IDI_APPLICATION); 
    wcex.hCursor = LoadCursor(NULL, IDC_ARROW); 
    wcex.hbrBackground = CreateSolidBrush(RGB(63, 80, 95)); 
    wcex.lpszMenuName = NULL; 
    wcex.lpszClassName = szWindowClass; 
    wcex.hIconSm = LoadIcon(wcex.hInstance, IDI_APPLICATION); 
 
    if (!RegisterClassEx(&wcex)) { 
        MessageBox(NULL, _T("Call to RegisterClassEx failed!"), 
            _T("Windows Desktop"), NULL); 
        return 1; 
    } 
 
    hInst = hInstance; 
 
    HWND hWnd = CreateWindowEx( 
        WS_EX_OVERLAPPEDWINDOW, 
        szWindowClass, 
        szTitle, 
        WS_OVERLAPPEDWINDOW, 
        CW_USEDEFAULT, CW_USEDEFAULT, 
        340, 500, 
        NULL, 
        NULL, 
        hInstance, 
        NULL 
    ); 
 
    if (!hWnd) { 
        MessageBox(NULL, _T("Call to CreateWindow failed!"), 
            _T("Windows Desktop"), NULL); 
        return 1; 
    } 
 
    ShowWindow(hWnd, nCmdShow); 
    UpdateWindow(hWnd); 
 
    MSG msg; 
    while (GetMessage(&msg, NULL, 0, 0)) { 
        TranslateMessage(&msg); 
        DispatchMessage(&msg); 
    } 
 
    return (int)msg.wParam; 
} 
 
 
LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam) { 
    PAINTSTRUCT ps; 
    HDC hdc; 
    TCHAR greeting[] = _T("Hello, Windows desktop!"); 
 
    switch (message) { 
    case WM_PAINT: 
        hdc = BeginPaint(hWnd, &ps); 
        //TextOut(hdc, 5, 5, greeting, _tcslen(greeting)); 
        EndPaint(hWnd, &ps); 
        break; 
    case WM_DESTROY: 
        PostQuitMessage(0); 
        break; 
    case WM_CREATE: 
        HWND hButton; 
        hButton = CreateWindowEx( 
            WS_EX_TRANSPARENT, TEXT("Button"), 
            TEXT("Press me"), WS_CHILD, 
            150, 150, 80, 40, 
            hWnd, (HMENU)ID_BTN, 
            NULL, NULL 
        ); 
        ShowWindow(hButton, SW_SHOW); 
        UpdateWindow(hButton); 
 
        HWND hEdit; 
        hEdit = CreateWindowEx( 
            WS_EX_TRANSPARENT, TEXT("Edit"), 
            TEXT(""), WS_CHILD | ES_LEFT | WS_BORDER, 
            20, 20, 278, 90, 
            hWnd, NULL, 
            NULL, NULL 
        ); 
        ShowWindow(hEdit, SW_SHOW); 
        UpdateWindow(hEdit); 
        break; 
    case WM_CTLCOLORSTATIC: 
    { 
        HDC hdcStatic = (HDC)wParam; 
        SetBkMode(hdcStatic, TRANSPARENT); 
        return (INT_PTR)(HBRUSH)GetStockObject(NULL_BRUSH); 
        break; 
    } 
    default: 
        return DefWindowProc(hWnd, message, wParam, lParam); 
        break; 
    } 
 
    return 0; 
}