parameter handling improvements

Old behaviour was that we simply assumed the first parameter will be
the X11 -display parameter. This is just WRONG!

We now query the parameter list for the value of -display, that's if it
exists in the first place.

2 files changed, 12 insertions, 2 deletions

diff --git a/src/corelib/fpg_main.pas b/src/corelib/fpg_main.pas
index 537138fb..ee05655a 100644
--- a/src/corelib/fpg_main.pas
+++ b/src/corelib/fpg_main.pas
@@ -1136,7 +1136,7 @@ end;
 function fpgApplication: TfpgApplication;
 begin
   if not Assigned(uApplication) then
-    uApplication := TfpgApplication.Create(ParamStr(1));
+    uApplication := TfpgApplication.Create;
   result := uApplication;
 end;
 
diff --git a/src/corelib/x11/fpg_x11.pas b/src/corelib/x11/fpg_x11.pas
index 8dce37cf..f36b0db4 100644
--- a/src/corelib/x11/fpg_x11.pas
+++ b/src/corelib/x11/fpg_x11.pas
@@ -400,6 +400,7 @@ uses
   fpg_stringutils,  // used for GetTextWidth
   fpg_utils,
   fpg_form,         // for modal event support
+  fpg_cmdlineparams,
   cursorfont,
   xatom,            // used for XA_WM_NAME
   keysym,
@@ -1328,10 +1329,19 @@ begin
 end;
 
 constructor TfpgX11Application.Create(const AParams: string);
+var
+  s: string;
 begin
   inherited Create(AParams);
   FIsInitialized    := False;
-  FDisplay          := XOpenDisplay(PChar(aparams));
+
+  if gCommandLineParams.IsParam('display') then
+  begin
+    s := gCommandLineParams.GetParam('display');
+    FDisplay := XOpenDisplay(PChar(s));
+  end
+  else
+    FDisplay := XOpenDisplay('');
 
   if FDisplay = nil then
     raise Exception.Create('fpGUI-X11: Could not open the display. Is your X11 server running?');