[hbelusca] 68776: [SDK:SCRNSAVE] - Add support for specifying a parent window handle for the screensaver configuration dialog, adapted from patch by Timo Kreuzer, see CORE-5718. - Fix failure retur...
20 Aug
2015
20 Aug
'15
7:44 p.m.
Author: hbelusca
Date: Thu Aug 20 19:44:13 2015
New Revision: 68776
URL: http://svn.reactos.org/svn/reactos?rev=68776&view=rev
Log:
[SDK:SCRNSAVE]
- Add support for specifying a parent window handle for the screensaver configuration
dialog, adapted from patch by Timo Kreuzer, see CORE-5718.
- Fix failure return values from the helper functions.
- Add TranslateMessage call in the message pump.
- Get the correct left/top coordinates for the screensaver, being multi-screen aware.
- Use Win-compatible window names & styles for the screensaver preview dialog &
screensaver window, compatible MS' scrnsave.lib.
Modified:
trunk/reactos/lib/sdk/scrnsave/scrnsave.c
Modified: trunk/reactos/lib/sdk/scrnsave/scrnsave.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/lib/sdk/scrnsave/scrnsave.…
==============================================================================
--- trunk/reactos/lib/sdk/scrnsave/scrnsave.c [iso-8859-1] (original)
+++ trunk/reactos/lib/sdk/scrnsave/scrnsave.c [iso-8859-1] Thu Aug 20 19:44:13 2015
@@ -2,7 +2,8 @@
* PROJECT: ReactOS Screen Saver Library
* LICENSE: GPL v2 or any later version
* FILE: lib/sdk/scrnsave/scrnsave.c
- * PURPOSE: Library for writing screen savers, compatible with MS'
scrnsave.lib
+ * PURPOSE: Library for writing screen savers, compatible with
+ * MS' scrnsave.lib without Win9x support.
* PROGRAMMERS: Anders Norlander <anorland(a)hem2.passagen.se>
* Colin Finck <mail(a)colinfinck.de>
*/
@@ -38,7 +39,7 @@
return (c == ' ' || c == '\t');
}
-#define ISNUM(c) ((c) >= '0' && c <= '9')
+#define ISNUM(c) ((c) >= '0' && (c) <= '9')
static ULONG_PTR _toulptr(const TCHAR *s)
{
@@ -78,9 +79,11 @@
{
switch (wParam)
{
- case SC_CLOSE:
- case SC_SCREENSAVE:
- return FALSE;
+ case SC_CLOSE: // - Closing the screen saver, or...
+ case SC_NEXTWINDOW: // - Switching to
+ case SC_PREVWINDOW: // different windows, or...
+ case SC_SCREENSAVE: // - Starting another screen saver:
+ return FALSE; // Fail it!
}
}
break;
@@ -102,7 +105,7 @@
case WM_ACTIVATEAPP:
if (!wParam)
{
- // wParam is FALSE, so the screensaver is losing the focus.
+ // wParam is FALSE, so the screen saver is losing the focus.
PostMessage(hWnd, WM_CLOSE, 0, 0);
}
break;
@@ -111,6 +114,8 @@
{
POINT pt;
GetCursorPos(&pt);
+ // TODO: Implement mouse move threshold. See:
+ //
http://svn.reactos.org/svn/reactos/trunk/rosapps/applications/screensavers/…
if (pt.x == pt_orig.x && pt.y == pt_orig.y)
break;
@@ -118,11 +123,14 @@
}
case WM_LBUTTONDOWN:
+ case WM_MBUTTONDOWN:
case WM_RBUTTONDOWN:
- case WM_MBUTTONDOWN:
+ case WM_XBUTTONDOWN:
case WM_KEYDOWN:
case WM_KEYUP:
- // Send a WM_CLOSE to close the screen saver (allows the screensaver author
to do clean-up tasks)
+ case WM_SYSKEYDOWN:
+ // Send a WM_CLOSE to close the screen saver (allows
+ // the screen saver to perform clean-up tasks)
PostMessage(hWnd, WM_CLOSE, 0, 0);
break;
@@ -137,60 +145,81 @@
// Registers the screen saver window class
static BOOL RegisterScreenSaverClass(void)
{
- WNDCLASS cls = {0,};
-
- cls.hIcon = LoadIcon(hMainInstance, MAKEINTATOM(ID_APP));
+ WNDCLASS cls;
+
+ cls.hCursor = NULL;
+ cls.hIcon = LoadIcon(hMainInstance, MAKEINTATOM(ID_APP));
+ cls.lpszMenuName = NULL;
cls.lpszClassName = CLASS_SCRNSAVE;
cls.hbrBackground = (HBRUSH)GetStockObject(BLACK_BRUSH);
- cls.hInstance = hMainInstance;
- cls.style = CS_VREDRAW | CS_HREDRAW | CS_SAVEBITS | CS_PARENTDC;
- cls.lpfnWndProc = SysScreenSaverProc;
-
- return RegisterClass(&cls) != 0;
-}
-
-static void LaunchConfig(void)
+ cls.hInstance = hMainInstance;
+ cls.style = CS_VREDRAW | CS_HREDRAW | CS_DBLCLKS | CS_SAVEBITS |
CS_PARENTDC;
+ cls.lpfnWndProc = SysScreenSaverProc;
+ cls.cbWndExtra = 0;
+ cls.cbClsExtra = 0;
+
+ return (RegisterClass(&cls) != 0);
+}
+
+static int LaunchConfig(HWND hParent)
{
// Only show the dialog if the RegisterDialogClasses function succeeded.
// This is the same behaviour as MS' scrnsave.lib.
- if( RegisterDialogClasses(hMainInstance) )
- DialogBox(hMainInstance, MAKEINTRESOURCE(DLG_SCRNSAVECONFIGURE),
GetForegroundWindow(), (DLGPROC) ScreenSaverConfigureDialog);
+ if (!RegisterDialogClasses(hMainInstance))
+ return -1;
+
+ return DialogBox(hMainInstance, MAKEINTRESOURCE(DLG_SCRNSAVECONFIGURE),
+ hParent, (DLGPROC)ScreenSaverConfigureDialog);
}
static int LaunchScreenSaver(HWND hParent)
{
- UINT style;
+ LPCTSTR lpWindowName;
+ UINT style, exstyle;
RECT rc;
MSG msg;
if (!RegisterScreenSaverClass())
{
MessageBox(NULL, TEXT("RegisterClass() failed"), NULL, MB_ICONHAND);
- return 1;
+ return -1;
}
// A slightly different approach needs to be used when displaying in a preview
window
if (hParent)
{
- style = WS_CHILD;
+ fChildPreview = TRUE;
+ lpWindowName = TEXT("Preview");
+
+ style = WS_CHILD | WS_VISIBLE | WS_CLIPCHILDREN;
+ exstyle = 0;
+
GetClientRect(hParent, &rc);
+ rc.left = 0;
+ rc.top = 0;
}
else
{
- style = WS_POPUP;
- rc.right = GetSystemMetrics(SM_CXVIRTUALSCREEN);
+ fChildPreview = FALSE;
+ lpWindowName = TEXT("Screen Saver");
+
+ style = WS_POPUP | WS_VISIBLE | WS_CLIPSIBLINGS | WS_CLIPCHILDREN;
+ exstyle = WS_EX_TOOLWINDOW | WS_EX_TOPMOST;
+
+ // Get the left & top side coordinates of the virtual screen
+ rc.left = GetSystemMetrics(SM_XVIRTUALSCREEN);
+ rc.top = GetSystemMetrics(SM_YVIRTUALSCREEN);
+ // Get the width and height of the virtual screen
+ rc.right = GetSystemMetrics(SM_CXVIRTUALSCREEN);
rc.bottom = GetSystemMetrics(SM_CYVIRTUALSCREEN);
- style |= WS_VISIBLE;
}
// Create the main screen saver window
- hMainWindow = CreateWindowEx(hParent ? 0 : WS_EX_TOPMOST, CLASS_SCRNSAVE,
- TEXT("SCREENSAVER"), style,
- 0, 0, rc.right, rc.bottom, hParent, NULL,
- hMainInstance, NULL);
-
- if(!hMainWindow)
- return 1;
+ hMainWindow = CreateWindowEx(exstyle, CLASS_SCRNSAVE, lpWindowName, style,
+ rc.left, rc.top, rc.right, rc.bottom,
+ hParent, NULL, hMainInstance, NULL);
+ if (!hMainWindow)
+ return -1;
// Display window and start pumping messages
ShowWindow(hMainWindow, SW_SHOW);
@@ -198,7 +227,10 @@
SetCursor(NULL);
while (GetMessage(&msg, NULL, 0, 0))
+ {
+ TranslateMessage(&msg);
DispatchMessage(&msg);
+ }
return msg.wParam;
}
@@ -208,12 +240,16 @@
{
LPTSTR p;
- UNREFERENCED_PARAMETER(nCmdShow);
- UNREFERENCED_PARAMETER(hPrevInst);
+ UNREFERENCED_PARAMETER(nCmdShow);
+ UNREFERENCED_PARAMETER(hPrevInst);
hMainInstance = hInst;
- // Parse the arguments
+ // Parse the arguments:
+ // -a <hwnd> (Change the password; only for Win9x, unused on WinNT)
+ // -s (Run the screensaver)
+ // -p <hwnd> (Preview)
+ // -c <hwnd> (Configure)
for (p = CmdLine; *p; p++)
{
switch (*p)
@@ -226,23 +262,34 @@
case 'P':
case 'p':
{
+ HWND hParent;
+
+ while (ISSPACE(*++p));
+ hParent = (HWND)_toulptr(p);
+
// Start the screen saver in preview mode
- HWND hParent;
- fChildPreview = TRUE;
-
- while (ISSPACE(*++p));
- hParent = (HWND) _toulptr(p);
-
if (hParent && IsWindow(hParent))
return LaunchScreenSaver(hParent);
+ else
+ return -1;
}
- return 0;
case 'C':
case 'c':
+ {
+ HWND hParent;
+
+ if (p[1] == ':')
+ hParent = (HWND)_toulptr(p + 2);
+ else
+ hParent = GetForegroundWindow();
+
// Display the configuration dialog
- LaunchConfig();
- return 0;
+ if (hParent && IsWindow(hParent))
+ return LaunchConfig(hParent);
+ else
+ return -1;
+ }
case '-':
case '/':
@@ -252,7 +299,5 @@
}
}
- LaunchConfig();
-
- return 0;
-}
+ return LaunchConfig(NULL);
+}
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