Changeset 50 for trunk/gotcha.cpp

Timestamp:

Apr 7, 2018, 9:52:46 PM (7 years ago)

Author:

Gregg Young

Message:

Only allow single instance of Gotcha Quiet; Disable PM print screen setting on opening Gotcha Quiet and restore it to what ever it was set to on exit. Update the hook version.

File:

• trunk/gotcha.cpp (modified) (4 diffs)

trunk/gotcha.cpp

@@ -107 +107 @@
     //DisplayError("DEBUG", "%d", Version());
 #ifdef _QUIET_
-    if ((Version() < 1))
+    if ((Version() < 2))
     {
         DisplayError("GOTCHDLL.DLL TOO OLD",
@@ -118 +118 @@
         exit (0);
     }
-
-    bool fPrtScr = FALSE;
-    ULONG ulDataSize;
     int rc;
-
-    rc = PrfQueryProfileSize( HINI_PROFILE, "PM_ControlPanel", "PrintScreen",
-                             &ulDataSize );
-    rc = PrfQueryProfileData(HINI_USERPROFILE, "PM_ControlPanel", "PrintScreen",
-                             &fPrtScr, &ulDataSize);
-    if (fPrtScr || !rc) {
-        fPrtScr = TRUE;
-        bool temp = FALSE;
-        rc = PrfWriteProfileData(HINI_USERPROFILE, "PM_ControlPanel", "PrintScreen",
-                                 &temp, sizeof(bool));
+    HMTX    hmtx     = NULLHANDLE;
+    // running multiple instances orphans all but the first closed hook unloaded
+    rc = DosOpenMutexSem("\\SEM32\\GOTCHA", &hmtx);
+    if (!rc) { 
+        DisplayError("GOTCHA QUIET ALREADY RUNNING",
+                     "Another instance of Gotcha Quiet is running."
+                     " You can open Gotcha Quiet's settings using"
+                     " the Alt+Print Screen key combination");
+        exit (0);
+    }
+    rc = DosCreateMutexSem("\\SEM32\\GOTCHA", &hmtx, 0, FALSE);
+    if (rc) {
+        DisplayError("Semaphore creation failed",
+                     "Try restarting Gotcha Quiet");
+        exit (0);
     }
 #endif
@@ -149 +151 @@
     pset->pForceSaveFile = pset->QueryForceSaveFile();
     pset->bSerialCapture = pset->SerialCapture ();
+
+#ifdef _QUIET_
+    bool fPrtScr = FALSE;
+    ULONG ulDataSize = 0;
+    
+    rc = PrfQueryProfileSize( HINI_PROFILE, "PM_ControlPanel", "PrintScreen",
+                             &ulDataSize );
+    rc = PrfQueryProfileData(HINI_USERPROFILE, "PM_ControlPanel", "PrintScreen",
+                             &fPrtScr, &ulDataSize);
+    bool temp = FALSE;// always turn it off while running
+    PrfWriteProfileData(HINI_USERPROFILE, "PM_ControlPanel",
+                        "PrintScreen", &temp, sizeof(bool));
+    PrfQueryProfileSize(pset->QueryPrfHandle (), "PM",
+                        "PrintScreen", &ulDataSize );
+    int rc1 = PrfQueryProfileData(pset->QueryPrfHandle (), "PM",
+                                  "PrintScreen", &temp, &ulDataSize);
+    bool temp2 = TRUE;
+    PrfQueryProfileData(pset->QueryPrfHandle (), "PM",
+                        "PrintScreen", &temp2, &ulDataSize);
+    if (!rc1 || (temp2 && (temp != fPrtScr))) { // no entry or user has changed PM setting
+        if (!rc) // Print screen is on by default (no ini entry)
+           fPrtScr = TRUE;
+        PrfWriteProfileData(pset->QueryPrfHandle (), "PM",
+                            "PrintScreen", &fPrtScr, sizeof(bool));
+    }
+    temp = FALSE;
+    PrfWriteProfileData(pset->QueryPrfHandle (), "PM",
+                        "Exited", &temp, sizeof(bool));
+#endif
     // check cmd line args and if "-a" found take screenshot and exit
     if (CheckCmdlineArgs (argc, argv))
@@ -228 +259 @@
 
 #ifdef _QUIET_
-    if (fPrtScr || !rc) {
-        PrfWriteProfileData(HINI_USERPROFILE, "PM_ControlPanel", "PrintScreen",
-                            &fPrtScr, sizeof(bool));
-    }
+    PrfQueryProfileSize(pset->QueryPrfHandle (), "PM",
+                        "PrintScreen", &ulDataSize );
+    PrfQueryProfileData(pset->QueryPrfHandle (), "PM",
+                        "PrintScreen", &fPrtScr, &ulDataSize);
+    PrfWriteProfileData(HINI_USERPROFILE, "PM_ControlPanel", "PrintScreen",
+                        &fPrtScr, sizeof(bool));
+    temp = TRUE;
+    PrfWriteProfileData(pset->QueryPrfHandle (), "PM",
+                        "Exited", &temp, sizeof(bool));
+
     StopInputHook ();
-#endif
-
+    DosCloseMutexSem(hmtx);
+#endif
+    
     delete g_phelp;
     delete pset;