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PROGRAM EasyGadtools;
{
This is just a test on how to make a unit EasyGadtools.
Feel free to make any changes or improvements on this
example. If you make a unit or have a unit to handle
gadtools in an easy way let me know.
24 Jul 2000.
Changed to use systemvartags.
25 Nov 2002.
nils.sjoholm@mailbox.swipnet.se
}
USES Intuition, Exec, Graphics, GadTools, Utility, pastoc,systemvartags;
CONST
strarray : array[0..4] of PChar = ('A cycle',
'test',
'for',
'FPC Pascal',
nil);
VAR
ps : pScreen;
vi : Pointer;
ng : tNewGadget;
glist,gad : pGadget;
wp : pWindow;
HFont : word;
HGadget : word;
DistGad : word;
HG : word;
attr : pTextAttr;
function NewGadget(left,top,width,height : Integer; txt : PChar; txtattr: pTextAttr;
id : word; flags: Longint; visinfo, userdata : Pointer): tNewGadget;
var
ng : tNewGadget;
begin
with ng do begin
ng_LeftEdge := left;
ng_TopEdge := top;
ng_Width := width;
ng_Height := height;
ng_GadgetText := txt;
ng_TextAttr := txtattr;
ng_GadgetID := id;
ng_Flags := flags;
ng_VisualInfo := visinfo;
ng_UserData := userdata;
END;
NewGadget := ng;
end;
PROCEDURE CleanUp(why : string; rc : BYTE);
BEGIN
IF assigned(wp) THEN CloseWindow(wp);
IF assigned(glist) THEN FreeGadgets(glist);
IF assigned(vi) THEN FreeVisualInfo(vi);
if why <> '' then writeln(why);
HALT(rc);
END;
{ Clones some datas from default pubscreen for fontsensitive
placing of gadgets. }
PROCEDURE CloneDatas;
BEGIN
ps := LockPubScreen(NIL);
IF ps = NIL THEN CleanUp('Can''t get a lock on public screen',20)
ELSE
BEGIN
HFont := ps^.Font^.ta_YSize;
attr := ps^.Font;
vi := GetVisualInfoA(ps,NIL);
UnLockPubScreen(NIL, ps);
IF vi = NIL THEN CleanUp('Can''t get VisualInfo', 20);
END;
END;
function ButtonGadget(id,left,top,width,height:word; txt:pchar): pGadget;
begin
ng := NewGadget(left,top,width,height,txt,attr,id,PLACETEXT_IN,vi,nil);
gad := CreateGadgetA(BUTTON_KIND,gad,@ng,nil);
ButtonGadget := gad;
end;
function ButtonGadget(id,left,top,width,height:word; txt: string): pGadget;
begin
ButtonGadget := ButtonGadget(id,left,top,width,height,pas2c(txt));
end;
function CycleGadget(id,left,top,width,height:word; txt:pchar ; thearr : Pointer): pGadget;
begin
ng := NewGadget(left,top,width,height,txt,attr,id,PLACETEXT_LEFT,vi,nil);
gad := CreateGadget(CYCLE_KIND,gad,@ng,[
GTCY_Labels,thearr,
TAG_END]);
CycleGadget := gad;
end;
PROCEDURE GenerateWindow;
BEGIN
glist := NIL; gad := CreateContext(addr(glist));
IF gad = NIL THEN CleanUp('Can''t create GadList', 20);
gad := ButtonGadget(0,10,HG,200,HGadget,'File Requester');
HG := HG + DistGad;
gad := ButtonGadget(1,10,HG,200,HGadget,'Font Requester');
HG := HG + DistGad;
gad := ButtonGadget(2,10,HG,200,HGadget,'Screen Requester');
HG := HG + DistGad + 3;
gad := CycleGadget(3,100,HG,100,HGadget,'Cycle me',@strarray);
HG := HG + DistGad+4;
gad := ButtonGadget(4,10,HG,96,HGadget,'OK');
gad := ButtonGadget(5,115,HG,96,HGadget,'Cancel');
HG := HG + 5;
if gad = nil then CleanUp('Can''t create gadgets',20);
wp := OpenWindowTags(NIL,[
WA_Gadgets, glist,
WA_Title, 'Test of EasyGadtools',
WA_Left,100,
WA_Top,100,
WA_Flags, WFLG_SMART_REFRESH OR WFLG_NOCAREREFRESH OR
WFLG_DEPTHGADGET OR WFLG_DRAGBAR OR WFLG_CLOSEGADGET OR
WFLG_ACTIVATE,
WA_Idcmp, IDCMP_GADGETUP OR IDCMP_CLOSEWINDOW,
WA_InnerWidth, 215,
WA_InnerHeight, HG,
TAG_DONE]);
IF wp = NIL THEN CleanUp('Can''t open window', 20);
END;
PROCEDURE MainWait;
VAR
msg : pIntuiMessage;
iclass : LONG;
ende : BOOLEAN;
BEGIN
ende := FALSE;
REPEAT
msg := pIntuiMessage(WaitPort(wp^.UserPort));
msg := GT_GetIMsg(wp^.UserPort);
WHILE msg <> NIL DO
BEGIN
iclass := msg^.IClass;
GT_ReplyIMsg(msg);
CASE iclass OF
IDCMP_CLOSEWINDOW : ende := TRUE;
IDCMP_GADGETUP : writeln('You clicked on a gadget');
ELSE END;
msg := GT_GetIMsg(wp^.UserPort);
END;
UNTIL ende;
END;
BEGIN
CloneDatas;
HGadget := HFont +6;
DistGad := HGadget +4;
HG := HFont + 10;
GenerateWindow;
MainWait;
CleanUp('',0);
END.
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