unit FooDlg;
interface
{$MINENUMSIZE 4}
uses
Windows;
type
{$IFDEF UNICODE}
TextString = System.WideString;
{$ELSE !UNICODE}
TextString = System.AnsiString;
{$ENDIF UNICODE}
type
TFooModalResult = (
foomrNone,
foomrOk,
foomrCancel
);
type
TFooDialogParam =
record
Parent: HWND;
// in
Text : TextString;
// in/out
end;
type
TFooDialog =
class
private
FText: TextString;
public
class function ShowModal(
var AParam: TFooDialogParam): TFooModalResult;
end;
implementation
{$EXTENDEDSYNTAX ON}
uses
Messages;
const
FooDialogTemplate:
packed record
Dialog:
packed record
Header : TDlgTemplate;
Menu :
array [0..0]
of WideChar;
WndClass:
array [0..0]
of WideChar;
Title :
array [0..3]
of WideChar;
Points : Word;
Weight : Word;
Italic : Byte;
Charset : Byte;
FontFace:
array [0..12]
of WideChar;
end;
__align0: Word;
Edit:
packed record
Header : TDlgItemTemplate;
WndClass :
array [0..1]
of WideChar;
Title :
array [0..0]
of WideChar;
ExtraCount: Word;
end;
__align1: Word;
ButtonOk:
packed record
Header : TDlgItemTemplate;
WndClass :
array [0..1]
of WideChar;
Title :
array [0..3]
of WideChar;
ExtraCount: Word;
end;
ButtonCancel:
packed record
Header : TDlgItemTemplate;
WndClass :
array [0..1]
of WideChar;
Title :
array [0..7]
of WideChar;
ExtraCount: Word;
end;
end = (
Dialog: (
Header: (
style : WS_VISIBLE
or WS_POPUP
or WS_CAPTION
or WS_SYSMENU
or
DS_MODALFRAME
or DS_SETFONT
or DS_CENTER;
dwExtendedStyle: 0;
cdit : 3;
x : 0;
y : 0;
cx : 4 + 100 + 4;
cy : 4 + 60 + 2 + 12 + 4
);
Menu : (#0);
WndClass: (#0);
Title : ('
F', '
o', '
o', #0);
Points : 8;
Weight : FW_NORMAL;
Italic : Ord(False);
Charset : DEFAULT_CHARSET;
FontFace: ('
M', '
S', '
', '
S', '
h', '
e', '
l', '
l', '
', '
D', '
l', '
g', #0)
);
Edit: (
Header: (
style : WS_VISIBLE
or WS_CHILD
or WS_TABSTOP
or
ES_MULTILINE
or ES_WANTRETURN
or
WS_VSCROLL
or WS_HSCROLL
or
ES_AUTOVSCROLL
or ES_AUTOHSCROLL;
dwExtendedStyle: 0;
x : 4;
y : 4;
cx : 100;
cy : 60;
id : 100
);
WndClass : (#$FFFF, #$0081);
Title : (#0);
ExtraCount: 0
);
ButtonOk: (
Header: (
style : WS_VISIBLE
or WS_CHILD
or WS_TABSTOP
or
BS_DEFPUSHBUTTON;
dwExtendedStyle: 0;
x : 4 + 100 - 38 - 2 - 38;
y : 4 + 60 + 2;
cx : 38;
cy : 12;
id : ID_OK;
);
WndClass : (#$FFFF, #$0080);
Title : ('
&', '
O', '
K', #0);
ExtraCount: 0
);
ButtonCancel: (
Header: (
style : WS_VISIBLE
or WS_CHILD
or WS_TABSTOP
or
BS_PUSHBUTTON;
dwExtendedStyle: 0;
x : 4 + 100 - 38;
y : 4 + 60 + 2;
cx : 38;
cy : 12;
id : ID_CANCEL;
);
WndClass : (#$FFFF, #$0080);
Title : ('
&', '
C', '
a', '
n', '
c', '
e', '
l', #0);
ExtraCount: 0;
)
);
function FooDialogProc(ADlg: HWND; AMsg: UINT; WParam: WPARAM; LParam: LPARAM): Integer
stdcall;
const
PropName = '
Instance';
var
PropInst: TFooDialog;
EditText: HWND;
begin
Result := Ord(True);
case AMsg
of
WM_INITDIALOG:
begin
PropInst := TFooDialog(LParam);
SetProp(ADlg, PropName, THandle(PropInst));
if Assigned(PropInst)
then
begin
EditText := GetDlgItem(ADlg, FooDialogTemplate.Edit.Header.id);
if EditText <> 0
then
SetWindowText(EditText, PChar(PropInst.FText));
end;
end;
WM_NCDESTROY:
RemoveProp(ADlg, PropName);
WM_CLOSE:
EndDialog(ADlg, Integer(foomrNone));
WM_COMMAND:
case HiWord(WParam)
of
BN_CLICKED:
begin
case LoWord(WParam)
of
ID_OK:
begin
PropInst := TFooDialog(GetProp(ADlg, PropName));
if Assigned(PropInst)
then
begin
EditText := GetDlgItem(ADlg, FooDialogTemplate.Edit.Header.id);
if EditText <> 0
then
begin
SetLength(PropInst.FText,
GetWindowTextLength(EditText) + 1);
SetLength(PropInst.FText,
GetWindowText(EditText, PChar(PropInst.FText),
Length(PropInst.FText)));
end;
end;
end;
end;
EndDialog(ADlg, LoWord(WParam));
end;
else
Result := Ord(False);
end;
else
Result := Ord(False);
end;
end;
class function TFooDialog.ShowModal(
var AParam: TFooDialogParam): TFooModalResult;
var
FooDialog: TFooDialog;
begin
FooDialog := TFooDialog.Create();
try
FooDialog.FText := AParam.Text;
Result := TFooModalResult(
DialogBoxIndirectParam(HInstance, FooDialogTemplate.Dialog.Header,
AParam.Parent, TFNDlgProc(@FooDialogProc), Integer(FooDialog)));
AParam.Text := FooDialog.FText;
finally
FooDialog.Free();
end;
end;
end.
Zitat
Baum-Darstellung
