Added allow multiple instances option

zsnes/src/gui/gui.asm

@@ -581,7 +581,7 @@ NEWSYM GUIWBAdd,  db 25
 NEWSYM BlackAndWhite, db 0
 NEWSYM MouseWheel, db 1
 NEWSYM AlternateTimer, db 0
-NEWSYM SuspendInBackground, db 0
+NEWSYM AllowMultipleInst, db 0
 
 GUIsave equ $-GUIRAdd
 

zsnes/src/gui/guimouse.inc

@@ -2634,7 +2634,7 @@ DisplayGUIOptnsClick:
 %ifdef __WIN32__
     GUIClickCButton 12,168,byte[AlwaysOnTop]
     GUIClickCButton 12,178,byte[SaveMainWindowPos]
-    GUIClickCButton 12,188,byte[SuspendInBackground]
+    GUIClickCButton 12,188,byte[AllowMultipleInst]
     GUIClickCButton 124,23,byte[MouseWheel]
 %endif
 

zsnes/src/gui/guiwindp.inc

@@ -4759,7 +4759,7 @@ DisplayGUIOptns:
 .nocheck10
     GUIDisplayIconWin 10,12,178,[GUITemp]
     mov dword[GUITemp],GUIIconDataCheckBoxUC
-    cmp byte[SuspendInBackground],1
+    cmp byte[AllowMultipleInst],1
     jne .nocheck11
     mov dword[GUITemp],GUIIconDataCheckBoxC
 .nocheck11
@@ -4919,7 +4919,7 @@ GUIGUIOptnsTextG db 'BACK',0
 GUIGUIOptnsTextH db 'TITLE',0
 GUIGUIOptnsTextI db 'WIN',0
 GUIGUIOptnsTextJ db 'WHEEL MOUSE',0
-GUIGUIOptnsTextK db 'SUSPEND IN BACKGROUND',0
+GUIGUIOptnsTextK db 'ALLOW MULTIPLE INSTANCES',0
 
 DisplayGUIAbout:
 ;    cmp byte[OSPort],3

zsnes/src/win/winlink.cpp

@@ -191,7 +191,6 @@ extern BYTE HighPriority;
 extern BYTE AlwaysOnTop;
 extern BYTE SaveMainWindowPos;
 extern BYTE AlternateTimer;
-extern BYTE SuspendInBackground;
 extern signed short int MainWindowX;
 extern signed short int MainWindowY;
 extern int CurKeyPos;
@@ -1589,7 +1588,7 @@ void CheckTimers(void)
 void UpdateVFrame(void)
 {
 
-   if (SuspendInBackground == 1 && IsActivated == 0) WaitMessage();
+//   if (SuspendInBackground == 1 && IsActivated == 0) WaitMessage();
 
    int DataNeeded;
    int SPCSize=256;

zsnes/src/win/zloaderw.c

@@ -20,6 +20,7 @@
 #include <stdio.h>
 #include <ctype.h>
 #include <direct.h>
+#include <winuser.h>
 
 extern void zstart(void);
 extern void DosExit(void);
@@ -37,7 +38,7 @@ extern unsigned char Palette0, SPC700sh, OffBy1Line, DSPDisable,
                      romtype, scanlines, showallext, smallscreenon, soundon,
                      spcon, vsyncon, DisplayS, fname, filefound, SnowOn,
                      NetChatFirst,NetServer,NetNewNick,
-                     NetFilename,GUINetTextk2,NetQuitAfter,UDPConfig;
+                     NetFilename,GUINetTextk2,NetQuitAfter,UDPConfig,AllowMultipleInst;
 
 void ccmdline(void);
 
@@ -80,6 +81,18 @@ WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, PSTR szCmdLine, int iCmdSh
 
    hInst=hInstance;
 
+   if (AllowMultipleInst == 0)
+   {
+      HWND hFindWindow;
+      hFindWindow = FindWindow("ZSNESWIN", NULL);
+
+      if (hFindWindow != NULL)
+      {
+         SetForegroundWindow(hFindWindow);
+         DosExit();
+      }
+   }
+
    // Commandline: /ABCDE <nickname> <fname> <IP Addy>
    //   nickname = user nickname
    //   fname = filename w/ full path (if L) or path name (if C)