Uses GetLogicalDrives() in Windows (file dialogs). Closes #183

internal/c/qbx.cpp

@@ -961,6 +961,14 @@ void call_setbits(uint32 bsize,ptrszint *array,ptrszint i,int64 val) {
     setbits(bsize,(uint8*)(*array),i,val);
 }
 
+int32 logical_drives() {
+    #ifdef QB64_WINDOWS
+        return GetLogicalDrives();
+    #else
+        return 0;
+    #endif
+}
+
 inline ptrszint array_check(uptrszint index,uptrszint limit){
     //nb. forces signed index into an unsigned variable for quicker comparison
     if (index<limit) return index;

source/ide/ide_methods.bas

@@ -14316,12 +14316,19 @@ FUNCTION idezpathlist$ (path$)
             IF LEN(pathlist$) THEN pathlist$ = ".." + sep + pathlist$ ELSE pathlist$ = ".."
         END IF
         'add drive paths
+
+        DECLARE LIBRARY
+            FUNCTION logical_drives& ()
+        END DECLARE
+
+        d = logical_drives&
         FOR i = 0 TO 25
             IF RIGHT$(pathlist$, 1) <> sep AND LEN(pathlist$) > 0 THEN pathlist$ = pathlist$ + sep
-            IF _DIREXISTS(CHR$(65 + i) + ":\") THEN
+            IF _READBIT(d, i) THEN
                 pathlist$ = pathlist$ + CHR$(65 + i) + ":"
             END IF
         NEXT
+
         idezpathlist$ = pathlist$
         EXIT FUNCTION
     END IF