O programa cria 10 controles, um estilo para cada controle - Código refeito em 07/10/2023

#include <windows.h>

struct {
    int iStyle;
    TCHAR * szText;
}

button[] = {
    BS_PUSHBUTTON, TEXT("PUSHBUTTON"),
    BS_DEFPUSHBUTTON, TEXT ("DEFPUSHBUTTON"),
    BS_CHECKBOX, TEXT("CHECKBOX"),
    BS_AUTOCHECKBOX, TEXT("AUTOCHECKBOX"),
    BS_RADIOBUTTON, TEXT("RADIOBUTTON"),
    BS_3STATE, TEXT("3STATE"),
    BS_AUTO3STATE, TEXT("AUTO3STATE"),
    BS_GROUPBOX, TEXT("GROUPBOX"),
    BS_AUTORADIOBUTTON, TEXT("AUTORADIO"),
    BS_OWNERDRAW, TEXT("OWNERDRAW")
};

#define NUM (sizeof button / sizeof button[0])

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

int WINAPI WinMain(HINSTANCE hI, HINSTANCE hPI, PSTR szCL, int iCS) {
    static TCHAR szAppName[] = TEXT("BtnLook");
    HWND hwnd;
    MSG msg;
    WNDCLASS wndclass;
    
    wndclass.style = CS_HREDRAW | CS_VREDRAW;
    wndclass.lpfnWndProc = WndProc;
    wndclass.cbClsExtra  = 0;
    wndclass.cbWndExtra  = 0;
    wndclass.hInstance = hI;
    wndclass.hIcon     = LoadIcon(NULL, IDI_APPLICATION);
    wndclass.hCursor   = LoadCursor(NULL, IDC_ARROW);
    wndclass.hbrBackground = (HBRUSH) GetStockObject(WHITE_BRUSH);
    wndclass.lpszMenuName  = NULL;
    wndclass.lpszClassName = szAppName;

    if(!RegisterClass(&wndclass)) {
        MessageBox(
            NULL,
            TEXT("This program requires Windows NT!"),
            szAppName,
            MB_ICONERROR
        );
        return 0;
    }
    hwnd = CreateWindow(
        szAppName, TEXT("Programação para Windows"), WS_OVERLAPPEDWINDOW,
        CW_USEDEFAULT, CW_USEDEFAULT,
        CW_USEDEFAULT, CW_USEDEFAULT,
        NULL, NULL, hI, NULL
    );

    ShowWindow(hwnd, iCS);
    UpdateWindow(hwnd);

    while(GetMessage(&msg, NULL, 0, 0)) {
        TranslateMessage(&msg);
        DispatchMessage (&msg);
    }
    return msg.wParam;
}

LRESULT CALLBACK WndProc(HWND hwnd, UINT msg, WPARAM wP, LPARAM lP) {
    static HWND hwndButton[NUM];
    static RECT rect;
    static TCHAR szTop[] = TEXT("message wParam lParam"),
                 szUnd[] = TEXT("_______ ______ ______"),
              szFormat[] = TEXT("%-16s%04X-%04X %04X-%04X"),
              szBuffer[50];
    static int cxChar, cyChar;
    HDC hdc;
    PAINTSTRUCT ps;
    int i;
    switch(msg) {
        case WM_CREATE:
            cxChar = LOWORD(GetDialogBaseUnits());
            cyChar = HIWORD(GetDialogBaseUnits());
            for(i = 0; i < NUM; i++)
                hwndButton[i] = CreateWindow(
                    TEXT("button"), button[i].szText,
                    WS_CHILD | WS_VISIBLE | button[i].iStyle,
                    cxChar, cyChar * (1 + 2 * i),
                    20 * cxChar, 7 * cyChar / 4,
                    hwnd, (HMENU) i,
                    ((LPCREATESTRUCT) lP)->hInstance, NULL
                );
                return 0;
        case WM_SIZE:
            rect.left = 24 * cxChar;
            rect.top  =  2 * cyChar;
            rect.right  = LOWORD(lP);
            rect.bottom = HIWORD(lP);
            return 0;
        case WM_PAINT:
            InvalidateRect(hwnd, &rect, TRUE);
            hdc = BeginPaint(hwnd, &ps);
            SelectObject(hdc, GetStockObject(SYSTEM_FIXED_FONT));
            SetBkMode(hdc, TRANSPARENT);
            TextOut(
                hdc, 24 * cxChar, cyChar, szTop, lstrlen(szTop)
            );
            TextOut(
                hdc, 24 * cxChar, cyChar, szUnd, lstrlen(szUnd)
            );
            EndPaint(hwnd, &ps);
            return 0;
        case WM_DRAWITEM:
        case WM_COMMAND:
            ScrollWindow(hwnd, 0, -cyChar, &rect, &rect);
            hdc = GetDC(hwnd);
            SelectObject(hdc, GetStockObject(SYSTEM_FIXED_FONT));
            TextOut(
                hdc, 24 * cxChar, cyChar * (rect.bottom / cyChar - 1),
                szBuffer, wsprintf(
                    szBuffer, szFormat,
                    msg == WM_DRAWITEM ? TEXT("WM_DRAWITEM"):
                    TEXT("WM_COMMAND"),
                    HIWORD(wP), LOWORD(wP),
                    HIWORD(lP), LOWORD(lP)
                )
            );
            ReleaseDC(hwnd, hdc);
            ValidateRect(hwnd, &rect);
            break;
        case WM_DESTROY:
            PostQuitMessage(0);
            return 0;
    }
    return DefWindowProc(hwnd, msg, wP, lP);
}