#include <windows.h>
#include <aygshell.h>

LRESULT MainWndProc(HWND hWnd, UINT message, WPARAM uParam, LPARAM lParam)
{
if(message == WM_LBUTTONDOWN)
{
DestroyWindow(hWnd);
return 0;
}
else if (message == WM_PAINT) // All painting is done here.
{
PAINTSTRUCT ps;

// BeginPaint() and EndPaint() are required for the WM_PAINT message.
// This will give us the very important 'Device context'.
BeginPaint(hWnd, &ps);

#if 1 // CHANGE THIS '1' to '0' FOR A SIMPLER EXAMPLE WITH LINES !!!!!
int x = 70, y = 100, radius = 20;

// Select a predefined (stock) brush into the 'Device context'. This 'hollow'
// brush will make sure the interior of the circles isn't filled. Remember
// the previous brush.
HBRUSH hbrSave = SelectObject(ps.hdc, GetStockObject(HOLLOW_BRUSH));
HPEN hpen, hpenSave;

// Create a 'pen' with the desired color. The pen is used to draw the circle.
hpen = CreatePen(PS_SOLID, 5, RGB(0,0,255));
// Select the pen into the 'Device context' and remember the previous pen.
hpenSave = SelectObject(ps.hdc, hpen);
// Draw the circle.
Ellipse(ps.hdc, x - radius, y - radius, x + radius, y + radius);
// Restore the previous pen in the 'Device context'.
SelectObject(ps.hdc, hpenSave);
// Destroy the pen we created in CreatePen() above.
DeleteObject(hpen);

// Same steps as above, but in new location with different color.
x += 25; y += 15;
hpen = CreatePen(PS_SOLID, 5, RGB(128,255,0));
hpenSave = SelectObject(ps.hdc, hpen);
Ellipse(ps.hdc, x - radius, y - radius, x + radius, y + radius);
SelectObject(ps.hdc, hpenSave);
DeleteObject(hpen);

// Same steps as above, but in new location with different color.
x += 25; y -= 15;
hpen = CreatePen(PS_SOLID, 5, RGB(0,0,0));
hpenSave = SelectObject(ps.hdc, hpen);
Ellipse(ps.hdc, x - radius, y - radius, x + radius, y + radius);
SelectObject(ps.hdc, hpenSave);
DeleteObject(hpen);

// Same steps as above, but in new location with different color.
x += 25; y += 15;
hpen = CreatePen(PS_SOLID, 5, RGB(0,192,0));
hpenSave = SelectObject(ps.hdc, hpen);
Ellipse(ps.hdc, x - radius, y - radius, x + radius, y + radius);
SelectObject(ps.hdc, hpenSave);
DeleteObject(hpen);

// Same steps as above, but in new location with different color.
x += 25; y -= 15;
hpen = CreatePen(PS_SOLID, 5, RGB(255,0,0));
hpenSave = SelectObject(ps.hdc, hpen);
Ellipse(ps.hdc, x - radius, y - radius, x + radius, y + radius);
SelectObject(ps.hdc, hpenSave);
DeleteObject(hpen);

// Restore the previous brush. It was a 'stock' brush, so no need to destroy it.
SelectObject(ps.hdc, hbrSave);
#else
// Create a pen, one pixel, bright red.
HPEN hpen = CreatePen(PS_SOLID, 1, RGB(255,0,0));
// Select the pen into the 'Device context' and remember the previous pen.
HPEN hpenSave = SelectObject(ps.hdc, hpen);
// Array of points to 'connect'.
POINT apt[] = {
{ 20,20 },
{ 50,20 },
{ 50,50 },
{ 20,50 },
{ 20,20 }
};

// Draw lines between the points in the 'apt' array.
Polyline(ps.hdc, apt, sizeof(apt) / sizeof(apt[0]));

// Restore the previous pen in the 'Device context'.
SelectObject(ps.hdc, hpenSave);
// Destroy the pen we created in CreatePen() above.
DeleteObject(hpen);
#endif

// Match the BeginPaint() above.
EndPaint(hWnd, &ps);
}

return DefWindowProc(hWnd, message, uParam, lParam);
}

//--------------------------------------------------------------------------------------

int WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPTSTR lpCmdLine, int nCmdShow)
{
WNDCLASS wc = {0};

wc.style = CS_HREDRAW|CS_VREDRAW;
wc.lpfnWndProc = (WNDPROC) MainWndProc;
wc.hInstance = hInstance;
wc.hbrBackground = GetStockObject(WHITE_BRUSH);
wc.lpszClassName = L"myapp";
if(RegisterClass(&wc))
{
HWND hWndMain;

if(hWndMain = CreateWindow(L"myapp",L"Prototype",WS_VISIBLE,0,0,240,320,0,0,hInstance,0))
{
MSG msg;

SHFullScreen(hWndMain, SHFS_HIDETASKBAR | SHFS_HIDESTARTICON | SHFS_HIDESIPBUTTON);
ShowWindow(hWndMain, SW_MAXIMIZE);
UpdateWindow(hWndMain);

ShowWindow(hWndMain, SW_MAXIMIZE);
UpdateWindow(hWndMain);

while(GetMessage(&msg,hWndMain,0,0))
DispatchMessage(&msg);

return msg.wParam;
}
}
return 0;
}