Max Gui Example
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The source code shown below illustrates the use of the BlitzLua function interface. Running it under BlitzLua produces the following output (depending on your platform - and currently still including any platform-specific problems): 

blitzmax.import(brl.event);
blitzmax.import(brl.eventqueue);
blitzmax.import(brl.maxgui);
blitzmax.import(brl.pixmap);

--------------------------------------------------------------------------------
-- loadGuiFont                    Platform-independent "loadGuiFont" function --
--------------------------------------------------------------------------------

  function loadGuiFont(FontName, FontSize, isBold, isItalic, isUnderlined)
    if (blitzmax.Platform ~= "Win32") then
      FontSize = math.floor(FontSize * 1.32);
    end;
    return brl.maxgui.loadGuiFont(FontName, FontSize, isBold, isItalic, isUnderlined);
  end;

--******************************************************************************
--*                                                                            *
--*                                Main Program                                *
--*                                                                            *
--******************************************************************************

--**** provide a few application-specific definitions ****

  local Title    = "MaxGUI_00";
  local Subtitle = "very first experiments with MaxGUI and Lua";

--**** load some application-specific images ****

  local Icon = loadPixmap("Lua-Logo.png");
--  Icon = maskPixmap(Icon, 212,208,200);    -- does not work
  if (Icon == nil) then error("unable to load 'Lua-Logo.png'"); end;

  local sunkenLine = loadPixmap("sunkenLine.png");
  if (sunkenLine == nil) then error("unable to load 'sunkenLine.png'"); end;

--**** load any application-specific fonts ****

  local TitleFont    = loadGuiFont("Arial", 12, true, true, false);
  local SubtitleFont = loadGuiFont("Arial",  9, true, false,false);
  local TextFont     = loadGuiFont("Arial",  8, false,false,false);
  local BoldFont     = loadGuiFont("Arial",  8, true, false,false);
  if (TitleFont == nil) or (SubtitleFont == nil) or (TextFont == nil) or (BoldFont == nil) then
    error("unable to load all requested fonts");
  end;

--**** setup the application window ****

  local Window = createWindow(Title.." - "..Subtitle, 20,20, 320,240, nil,
    WINDOW_TITLEBAR + WINDOW_RESIZABLE + WINDOW_CLIENTCOORDS); -- + WINDOW_STATUS);
    setMinWindowSize(Window, 320,240);

    local IconView = createPanel(2,4, 32,32, Window);
      setPanelPixmap (IconView, Icon, PANELPIXMAP_CENTER);
      setGadgetLayout(IconView, EDGE_ALIGNED,0,EDGE_ALIGNED,0);
    local TitleLabel = createLabel(Title, 36,2, 282,18, Window, LABEL_RIGHT);
      setGadgetFont  (TitleLabel,TitleFont);
      setGadgetLayout(TitleLabel, 0,EDGE_ALIGNED,EDGE_ALIGNED,0);
    local SubtitleLabel = createLabel(Subtitle, 36,22, 282,16, Window, LABEL_RIGHT);
      setGadgetFont  (SubtitleLabel,SubtitleFont);
      setGadgetLayout(SubtitleLabel, 0,EDGE_ALIGNED,EDGE_ALIGNED,0);
    local UpperSeparator = createPanel(2,40, 316,2, Window);
      setPanelPixmap (UpperSeparator, sunkenLine, PANELPIXMAP_TILE);
      setGadgetLayout(UpperSeparator, EDGE_ALIGNED,EDGE_ALIGNED,EDGE_ALIGNED,0);
    local ClientArea = createTextArea(2,44, 316,174, Window, TEXTAREA_READONLY);
      setGadgetLayout(ClientArea, EDGE_ALIGNED,EDGE_ALIGNED,EDGE_ALIGNED,EDGE_ALIGNED);
      setGadgetColor (ClientArea, 128,128,128, true)
    local LowerSeparator = createPanel(2,220, 316,2, Window);
      setPanelPixmap (LowerSeparator, sunkenLine, PANELPIXMAP_TILE);
      setGadgetLayout(LowerSeparator, EDGE_ALIGNED,EDGE_ALIGNED,0,EDGE_ALIGNED);
    local Statusbar = createLabel("(no special action required)", 2,224, 316,18, Window);
      setGadgetFont  (Statusbar,TextFont);
      setGadgetLayout(Statusbar, EDGE_ALIGNED,EDGE_ALIGNED,0,EDGE_ALIGNED);
--  setStatusText(Window, "(no special action required)");
  showGadget(Window);

--**** handle any incoming events... ****

  while true do
    waitEvent();
    if (EventId() == EVENT_WINDOWCLOSE) then break; end;
  end;

The following output

is produced by the script shown below (which currently crashes under Linux): 

blitzmax.import(brl.event);
blitzmax.import(brl.eventqueue);
blitzmax.import(brl.maxgui);
blitzmax.import(brl.pixmap);

--------------------------------------------------------------------------------
-- loadGuiFont                    Platform-independent "loadGuiFont" function --
--------------------------------------------------------------------------------

  function loadGuiFont(FontName, FontSize, isBold, isItalic, isUnderlined)
    if (blitzmax.Platform ~= "Win32") then
      FontSize = math.floor(FontSize * 1.32);
    end;
    return brl.maxgui.loadGuiFont(FontName, FontSize, isBold, isItalic, isUnderlined);
  end;

--******************************************************************************
--*                                                                            *
--*                                Main Program                                *
--*                                                                            *
--******************************************************************************

--**** provide a few application-specific definitions ****

  local Title    = "MaxGUI_01";
  local Subtitle = "displays several System and Environment Parameters";

--**** load some application-specific images ****

  local Icon = loadPixmap("Lua-Logo.png");
--  Icon = maskPixmap(Icon, 212,208,200);    -- does not work
  if (Icon == nil) then error("unable to load 'Lua-Logo.png'"); end;

  local sunkenLine = loadPixmap("sunkenLine.png");
  if (sunkenLine == nil) then error("unable to load 'sunkenLine.png'"); end;

--**** load any application-specific fonts ****

  local TitleFont    = loadGuiFont("Arial", 12, true, true, false);
  local SubtitleFont = loadGuiFont("Arial",  9, true, false,false);
  local TextFont     = loadGuiFont("Arial",  8, false,false,false);
  local BoldFont     = loadGuiFont("Arial",  8, true, false,false);
  if (TitleFont == nil) or (SubtitleFont == nil) or (TextFont == nil) or (BoldFont == nil) then
    error("unable to load all requested fonts");
  end;

--**** setup the application window ****

  local Window = createWindow(Title.." - "..Subtitle, 20,20, 400,300, nil,
    WINDOW_TITLEBAR + WINDOW_RESIZABLE + WINDOW_CLIENTCOORDS); -- + WINDOW_STATUS);
    setMinWindowSize(Window, 400,300);

    local IconView = createPanel(2,4, 32,32, Window);
      setPanelPixmap (IconView, Icon, PANELPIXMAP_CENTER);
      setGadgetLayout(IconView, EDGE_ALIGNED,0,EDGE_ALIGNED,0);
    local TitleLabel = createLabel(Title, 36,2, 362,18, Window, LABEL_RIGHT);
      setGadgetFont  (TitleLabel,TitleFont);
      setGadgetLayout(TitleLabel, 0,EDGE_ALIGNED,EDGE_ALIGNED,0);
    local SubtitleLabel = createLabel(Subtitle, 36,22, 362,16, Window, LABEL_RIGHT);
      setGadgetFont  (SubtitleLabel,SubtitleFont);
      setGadgetLayout(SubtitleLabel, 0,EDGE_ALIGNED,EDGE_ALIGNED,0);
    local UpperSeparator = createPanel(2,40, 396,2, Window);
      setPanelPixmap (UpperSeparator, sunkenLine, PANELPIXMAP_TILE);
      setGadgetLayout(UpperSeparator, EDGE_ALIGNED,EDGE_ALIGNED,EDGE_ALIGNED,0);
    local ClientArea = createTextArea(2,44, 396,234, Window, TEXTAREA_READONLY);
      setGadgetLayout(ClientArea, EDGE_ALIGNED,EDGE_ALIGNED,EDGE_ALIGNED,EDGE_ALIGNED);
      setTextAreaTabs(ClientArea, 10);
    local LowerSeparator = createPanel(2,280, 396,2, Window);
      setPanelPixmap (LowerSeparator, sunkenLine, PANELPIXMAP_TILE);
      setGadgetLayout(LowerSeparator, EDGE_ALIGNED,EDGE_ALIGNED,0,EDGE_ALIGNED);
    local Statusbar = createLabel("(no special action required)", 2,284, 396,18, Window);
      setGadgetFont  (Statusbar,TextFont);
      setGadgetLayout(Statusbar, EDGE_ALIGNED,EDGE_ALIGNED,0,EDGE_ALIGNED);
--  setStatusText(Window, "(no special action required)");
  showGadget(Window);

--**** fill "ClientArea" with some information ****

  addTextAreaText(ClientArea,"Lua:\n");
    formatTextAreaText(ClientArea, 0,0,0, TEXTFORMAT_BOLD, 0,1, TEXTAREA_LINES);
  addTextAreaText(ClientArea,"  Version:\t".._VERSION.."\n");
  addTextAreaText(ClientArea,"  Arguments:\t");
    if (#ArgList == 0) then
      addTextAreaText(ClientArea,"(none)\n");
    else
      addTextAreaText(ClientArea,"\n");
      for i,Value in ipairs(ArgList) do
        addTextAreaText(ClientArea,"    "..i..":\t\""..Value.."\"\n");
      end;
    end;
  addTextAreaText(ClientArea,"\n");
  addTextAreaText(ClientArea,"BlitzMAX:\n");
    formatTextAreaText(ClientArea, 0,0,0, TEXTFORMAT_BOLD,
      TextAreaLen(ClientArea,TEXTAREA_LINES)-2,1, TEXTAREA_LINES);
  addTextAreaText(ClientArea,"  AppDir:\t\""..blitzmax.AppDir.."\"\n");
  addTextAreaText(ClientArea,"  AppFile:\t\""..blitzmax.AppFile.."\"\n");
  addTextAreaText(ClientArea,"  LaunchDir:\t\""..blitzmax.LaunchDir.."\"\n");
  addTextAreaText(ClientArea,"\n");
  addTextAreaText(ClientArea,"System:\n");
    formatTextAreaText(ClientArea, 0,0,0, TEXTFORMAT_BOLD,
      TextAreaLen(ClientArea,TEXTAREA_LINES)-2,1, TEXTAREA_LINES);
  addTextAreaText(ClientArea,"  Platform:\t\""..blitzmax.Platform.."\"\n");
  addTextAreaText(ClientArea,"  Date:\t\""..brl.system.currentDate().."\"\n");
  addTextAreaText(ClientArea,"  Time:\t\""..brl.system.currentTime().."\"\n");
  addTextAreaText(ClientArea,"\n");
  addTextAreaText(ClientArea,"Display:\n");
    formatTextAreaText(ClientArea, 0,0,0, TEXTFORMAT_BOLD,
      TextAreaLen(ClientArea,TEXTAREA_LINES)-2,1, TEXTAREA_LINES);
    local Display = Desktop();
  addTextAreaText(ClientArea,"  Geometry:\t"..GadgetWidth(Display).."x"..
    GadgetHeight(Display).."+"..GadgetX(Display).."+"..GadgetY(Display).."\n");

--**** handle any incoming events... ****

  while true do
    waitEvent();
    if (EventId() == EVENT_WINDOWCLOSE) then break; end;
  end;

--**** ...and - finally - close the application window ****

freeGadget(Window);

--AndreasRozek

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Last edited May 18, 2007 7:10 am GMT (diff)