From 36420ef44a6a7ff20498d32a556851c0ac566654 Mon Sep 17 00:00:00 2001
From: Jukka Heinonen <jhei@iki.fi>
Date: Mon, 20 Sep 2004 19:11:30 +0000
Subject: [PATCH] Added support for int33 show/hide mouse cursor calls.

---
 dlls/winedos/int33.c | 18 ++++++++++++++++--
 dlls/winedos/vga.c   | 32 ++++++++++++++++++++++++++++++++
 dlls/winedos/vga.h   |  1 +
 3 files changed, 49 insertions(+), 2 deletions(-)

diff --git a/dlls/winedos/int33.c b/dlls/winedos/int33.c
index fc2c6bef5ad..b0de443f69a 100644
--- a/dlls/winedos/int33.c
+++ b/dlls/winedos/int33.c
@@ -40,6 +40,7 @@ static struct
     FARPROC16 callback;
     WORD callmask;
     WORD VMPratio, HMPratio, oldx, oldy;
+    WORD hide_count;
 } mouse_info;
 
 
@@ -58,6 +59,10 @@ static void INT33_ResetMouse( CONTEXT86 *context )
     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 @@ void WINAPI DOSVM_Int33Handler( CONTEXT86 *context )
         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:
diff --git a/dlls/winedos/vga.c b/dlls/winedos/vga.c
index 00e2718992a..46d8651ffe3 100644
--- a/dlls/winedos/vga.c
+++ b/dlls/winedos/vga.c
@@ -653,6 +653,38 @@ int VGA_GetWindowStart()
     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
diff --git a/dlls/winedos/vga.h b/dlls/winedos/vga.h
index fb3b7d3b22a..f820c2479b0 100644
--- a/dlls/winedos/vga.h
+++ b/dlls/winedos/vga.h
@@ -40,6 +40,7 @@ LPSTR VGA_Lock(unsigned*Pitch,unsigned*Height,unsigned*Width,unsigned*Depth);
 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);