создание button

#include <Windows.h>
 
LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);
 
int WINAPI WinMain(
HINSTANCE hInstance,
HINSTANCE hPrevInstance,
LPTSTR lpCmdLine,
int nCmdShow)
{
 
char cname[]="Class";
char title[]="Òåñò ìîçãîâ";
MSG msg;
//ñòðóêòóðà äëÿ ðåãèñòðàöèè êëàññà îêîí
WNDCLASS wc;
wc.style = 0;
wc.lpfnWndProc = (WNDPROC)WndProc;
wc.cbClsExtra = 0;
wc.cbWndExtra = 0;
wc.hInstance = hInstance;
wc.hIcon = LoadIcon(hInstance, (LPCTSTR)IDI_APPLICATION);
wc.hCursor = LoadCursor(NULL, IDC_ARROW);
wc.hbrBackground = (HBRUSH)(COLOR_WINDOW+1);
wc.lpszMenuName = 0;
wc.lpszClassName = cname;
//ðåãåñòðèðóåì êëàññ
if(!RegisterClass(&wc)) return 0;
//ñîçäàòü îêíî
HWND hWnd = CreateWindow(cname, title, WS_OVERLAPPEDWINDOW,
0, 0, 500, 300, NULL, NULL, hInstance, NULL);
//ïðîâåðèì ñîçäàëîñü ëè îêíîif(!hWnd)return 0;
//Ñîçäàåì êíîïêó
HWND hWnd_button = CreateWindow("button", "Íà÷àòü", WS_CHILD | WS_VISIBLE | BS_PUSHBUTTON,
10, 10, 80, 30, hWnd, (HMENU)10000, hInstance, NULL);
//ïîêàçàòü îêíî
ShowWindow(hWnd, nCmdShow);
//îáíîâèòü ñîäåðæèìîå îêíà
UpdateWindow(hWnd);
 
 
//öèêë îáðàáîòêè ñîîáùåíèé
while(GetMessage(&msg, NULL,0 ,0))
{
                       
TranslateMessage(&msg);
DispatchMessage(&msg);
}
return 0;
};
 
//ïðîöåäóðà îêíà
LONG WINAPI WndProc(HWND hwnd, UINT Message, WPARAM wparam, LPARAM lparam)
{
switch (Message)
{
case WM_COMMAND:
if(LOWORD(wparam)==10000)
MessageBox(hwnd, "Êíîïêà íàæàòà", "", 0);
break;
case WM_CREATE:
break;
case WM_DESTROY:
PostQuitMessage(0);
break;
case WM_PAINT:
break;
default:
return DefWindowProc(hwnd, Message, wparam, lparam);
}
return 0;
}