// This function takes care of *must* do tasks, like terminating screen saver
static LRESULT WINAPI SysScreenSaverProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
switch(uMsg)
{
case WM_CREATE:
// Mouse is not supposed to move from this position
GetCursorPos(&pt_orig);
break;
case WM_DESTROY:
PostQuitMessage(0);
break;
case WM_SYSCOMMAND:
if (!fChildPreview)
{
switch (wParam)
{
case SC_CLOSE:
case SC_SCREENSAVE:
return FALSE;
}
}
break;
}
return ScreenSaverProc(hWnd, uMsg, wParam, lParam);
}
static LRESULT CALLBACK RealScreenSaverProc (HWND hwnd, int iMsg, WPARAM wparam,
LPARAM lparam)
{
switch (iMsg)
{
// If preview window is being displayed, user clicks the right mouse
// button in preview window, or user clicks ? button beside X button in
// caption area of Display Properties window followed by right mouse
// button in preview window, Windows sends a WM_CONTEXTMENU message. But
// if user clicks ? button followed by left mouse button in preview
// window, and then moves the mouse pointer out of preview window, Windows
// sends a WM_HELP message. In either case, message is forwarded to valid
// parent window.
case WM_CONTEXTMENU:
case WM_HELP:
if (g_scrmode == smPreview)
{
HWND hwndParent = GetParent (hwnd);
if (hwndParent == NULL || !IsWindow (hwndParent))
return 1;
PostMessage (hwndParent, iMsg, (WPARAM) hwndParent, lparam);
return 1;
}
break;
// WM_CREATE message sent in response to CreateWindowEx() function call in
// the doSaver() function.
case WM_CREATE:
// Capture the mouse¡¯s current position. This position is used in
// DefScreenSaverProc() to determine if the mouse has moved
// sufficiently to close the screensaver.
GetCursorPos (&g_ptMouse);
// If preview window is not being displayed (we are covering the
// entire desktop with a screensaver), hide the mouse cursor.
if (g_scrmode != smPreview)
SetCursor (NULL);
break;
// WM_DESTROY message sent in response to window being destroyed, after
// the window has been removed from the screen.
case WM_DESTROY:
// Terminate the screensaver. PostQuitMessage() posts a WM_QUIT
// message to the thread¡¯s message queue and immediately returns.
PostQuitMessage (0);
}
return ScreenSaverProc (hwnd, iMsg, wparam, lparam);
}
/* this function takes care of *must* do tasks, like terminating
screen saver */
static LRESULT WINAPI SysScreenSaverProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
switch (msg)
{
case WM_CREATE:
if (!fChildPreview)
SetCursor(NULL);
/* mouse is not supposed to move from this position */
GetCursorPos(&pt_orig);
break;
case WM_DESTROY:
PostQuitMessage(0);
break;
case WM_TIMER:
if (closing)
return 0;
break;
case WM_PAINT:
if (closing)
return DefWindowProc(hWnd, msg, wParam, lParam);
break;
case WM_SYSCOMMAND:
if (!fChildPreview)
switch (wParam)
{
case SC_CLOSE:
case SC_SCREENSAVE:
case SC_NEXTWINDOW:
case SC_PREVWINDOW:
return FALSE;
}
break;
case WM_MOUSEMOVE:
case WM_LBUTTONDOWN:
case WM_RBUTTONDOWN:
case WM_MBUTTONDOWN:
case WM_KEYDOWN:
case WM_SYSKEYDOWN:
case WM_NCACTIVATE:
case WM_ACTIVATE:
case WM_ACTIVATEAPP:
if (closing)
return DefWindowProc(hWnd, msg, wParam, lParam);
break;
}
return ScreenSaverProc(hWnd, msg, wParam, lParam);
}
