Implement DOS mouse cursor hiding/showing

[Jukka Heinonen]

This patch adds support for DOS mouse cursor
showing/hiding. The patch does not support text modes, 
but I don't think there really is a good reason
for text mode support anyway.




Changelog:
  Add support for int33 show/hide mouse cursor calls.




Index: dlls/winedos/int33.c
===================================================================
RCS file: /home/wine/wine/dlls/winedos/int33.c,v
retrieving revision 1.15
diff -u -r1.15 int33.c
--- dlls/winedos/int33.c	27 Oct 2003 22:06:27 -0000	1.15
+++ dlls/winedos/int33.c	19 Sep 2004 12:06:11 -0000
@@ -40,6 +40,7 @@
     FARPROC16 callback;
     WORD callmask;
     WORD VMPratio, HMPratio, oldx, oldy;
+    WORD hide_count;
 } mouse_info;
 
 
@@ -58,6 +59,10 @@
     mouse_info.HMPratio = 8;
     mouse_info.VMPratio = 16;
 
+    /* Hide the mouse cursor */
+    mouse_info.hide_count = 1;
+    VGA_ShowMouse( FALSE );    
+
     if (context)
     {
         SET_AX( context, 0xFFFF ); /* driver installed */
@@ -81,11 +86,20 @@
         break;
 
     case 0x0001:
-        FIXME("Show mouse cursor\n");
+        TRACE("Show mouse cursor, old hide count: %d\n",
+              mouse_info.hide_count);
+        if (mouse_info.hide_count >= 1)
+            mouse_info.hide_count--;
+        if (!mouse_info.hide_count)
+            VGA_ShowMouse( TRUE );
         break;
 
     case 0x0002:
-        FIXME("Hide mouse cursor\n");
+        TRACE("Hide mouse cursor, old hide count: %d\n",
+              mouse_info.hide_count);
+        if(!mouse_info.hide_count)
+            VGA_ShowMouse( FALSE );            
+        mouse_info.hide_count++;
         break;
 
     case 0x0003:




Index: dlls/winedos/vga.h
===================================================================
RCS file: /home/wine/wine/dlls/winedos/vga.h,v
retrieving revision 1.14
diff -u -r1.14 vga.h
--- dlls/winedos/vga.h	5 Sep 2003 23:08:28 -0000	1.14
+++ dlls/winedos/vga.h	19 Sep 2004 12:06:42 -0000
@@ -40,6 +40,7 @@
 void VGA_Unlock(void);
 void VGA_SetWindowStart(int start);
 int  VGA_GetWindowStart();
+void VGA_ShowMouse(BOOL show);
 
 /* text mode */
 void VGA_InitAlphaMode(unsigned*Xres,unsigned*Yres);




Index: dlls/winedos/vga.c
===================================================================
RCS file: /home/wine/wine/dlls/winedos/vga.c,v
retrieving revision 1.44
diff -u -r1.44 vga.c
--- dlls/winedos/vga.c	14 Aug 2004 00:49:39 -0000	1.44
+++ dlls/winedos/vga.c	19 Sep 2004 12:06:45 -0000
@@ -653,6 +653,38 @@
     return vga_fb_window;
 }
 
+
+/**********************************************************************
+ *         VGA_DoShowMouse
+ *
+ * Callback for VGA_ShowMouse.
+ */
+static WINAPI void VGA_DoShowMouse( ULONG_PTR show )
+{
+    INT rv;
+
+    do
+    {
+        rv = ShowCursor( show );
+    }
+    while( show ? (rv < 0) : (rv >= 0) );
+}
+
+
+/**********************************************************************
+ *         VGA_ShowMouse
+ *
+ * If argument is TRUE, unconditionally show mouse cursor.
+ * If argument is FALSE, unconditionally hide mouse cursor.
+ * This only works in graphics mode.
+ */
+void VGA_ShowMouse( BOOL show )
+{
+    if (lpddraw)
+        MZ_RunInThread( VGA_DoShowMouse, (ULONG_PTR)show );
+}
+
+
 /*** TEXT MODE ***/
 
 /* prepare the text mode video memory copy that is used to only





-- 
Jukka Heinonen <http://www.iki.fi/jhei>