// draw the client area into the specified device context
LRESULT CBalloonHelp::OnPrintClient(WPARAM wParam, LPARAM lParam)
{
CDC* pDC = CDC::FromHandle((HDC)wParam);
if ( lParam & PRF_ERASEBKGND )
SendMessage( WM_ERASEBKGND, wParam );
if ( lParam & PRF_CLIENT )
DrawClientArea(pDC);
return 0;
}
HRESULT CMainWindow::OnPaint(
HDC hdc,
const RECT &rcPaint
)
{
// Update the animation manager with the current time
UI_ANIMATION_SECONDS secondsNow;
HRESULT hr = m_pAnimationTimer->GetTime(
&secondsNow
);
if (SUCCEEDED(hr))
{
hr = m_pAnimationManager->Update(
secondsNow
);
if (SUCCEEDED(hr))
{
// Read the values of the animation variables and draw the client area
hr = DrawClientArea();
if (SUCCEEDED(hr))
{
// Continue redrawing the client area as long as there are animations scheduled
UI_ANIMATION_MANAGER_STATUS status;
hr = m_pAnimationManager->GetStatus(
&status
);
if (SUCCEEDED(hr))
{
if (status == UI_ANIMATION_MANAGER_BUSY)
{
InvalidateRect(
m_hwnd,
NULL,
FALSE
);
}
}
}
}
}
return hr;
}
// draw balloon client area (title & contents)
void CBalloonHelp::OnPaint()
{
CPaintDC dc(this); // device context for painting
DrawClientArea(&dc);
}
