tntjvexcontrols.pas

TntExUpdate 是 流行的 TntUnicodeControls控件的扩展包.包括很难找到的 TntJVCL 也在里面. TntSysUtils2.pas/TntSysUtilsEx.pa

end;

procedure TJvExGraphicControl0.ParentShowHintChanged;
begin
  BaseWndProc(CM_PARENTSHOWHINTCHANGED);
end;

function TJvExGraphicControl0.WantKey(Key: Integer; Shift: TShiftState; const KeyText: WideString): Boolean;
begin
  Result := BaseWndProc(CM_DIALOGCHAR, Word(Key), ShiftStateToKeyData(Shift)) <> 0;
end;

function TJvExGraphicControl0.HitTest(X, Y: Integer): Boolean;
begin
  Result := BaseWndProc(CM_HITTEST, 0, SmallPointToLong(PointToSmallPoint(Point(X, Y)))) <> 0;
end;

function TJvExGraphicControl0.HintShow(var HintInfo: THintInfo): Boolean;
begin
  GetHintColor(HintInfo, Self, FHintColor);
  Result := BaseWndProcEx(CM_HINTSHOW, 0, HintInfo) <> 0;
end;

procedure TJvExGraphicControl0.MouseEnter(AControl: TControl);
begin
  FMouseOver := True;
  {$IFDEF VCL}
  if Assigned(FOnMouseEnter) then
    FOnMouseEnter(Self);
  {$ENDIF VCL}
  BaseWndProc(CM_MOUSEENTER, 0, AControl);
end;

procedure TJvExGraphicControl0.MouseLeave(AControl: TControl);
begin
  FMouseOver := False;
  BaseWndProc(CM_MOUSELEAVE, 0, AControl);
  {$IFDEF VCL}
  if Assigned(FOnMouseLeave) then
    FOnMouseLeave(Self);
  {$ENDIF VCL}
end;

{$IFNDEF CLR}
procedure TJvExGraphicControl0.FocusChanged(AControl: TWinControl);
begin
  BaseWndProc(CM_FOCUSCHANGED, 0, AControl);
end;
{$ENDIF !CLR}

{$IFDEF COMPILER5}
{$IFNDEF HASAUTOSIZE}

procedure TJvExGraphicControl0.CMSetAutoSize(var Msg: TMessage);
begin
  SetAutoSize(Msg.WParam <> 0);
end;

procedure TJvExGraphicControl0.SetAutoSize(Value: Boolean);
begin
  TOpenControl_SetAutoSize(Self, Value);
end;

{$ENDIF !HASAUTOSIZE}
{$ENDIF COMPILER5}

procedure TJvExGraphicControl0.WndProc(var Msg: TMessage);
{$IFDEF CLR}
var
  AHintInfo: THintInfo;
{$ENDIF CLR}
begin
  if not DispatchIsDesignMsg(Self, Msg) then
  case Msg.Msg of
    CM_DENYSUBCLASSING:
      {$IFNDEF CLR}
      Msg.Result := Ord(GetInterfaceEntry(IJvDenySubClassing) <> nil);
      {$ELSE}
      Msg.Result := Integer(Supports(Self, IJvDenySubClassing));
      {$ENDIF !CLR}
    CM_DIALOGCHAR:
      with TCMDialogChar{$IFDEF CLR}.Create{$ENDIF}(Msg) do
        Result := Ord(WantKey(CharCode, KeyDataToShiftState(KeyData), WideChar(CharCode)));
    CM_HINTSHOW:
      {$IFNDEF CLR}
      with TCMHintShow(Msg) do
        Result := Integer(HintShow(HintInfo^));
      {$ELSE}
      with TCMHintShow.Create(Msg) do
      begin
        AHintInfo := HintInfo;
        Result := Integer(HintShow(AHintInfo));
        HintInfo := AHintInfo;
      end;
      {$ENDIF !CLR}
    CM_HITTEST:
      with TCMHitTest{$IFDEF CLR}.Create{$ENDIF}(Msg) do
        Result := Integer(HitTest(XPos, YPos));
    CM_MOUSEENTER:
      MouseEnter({$IFDEF CLR}nil{$ELSE}TControl(Msg.LParam){$ENDIF});
    CM_MOUSELEAVE:
      MouseLeave({$IFDEF CLR}nil{$ELSE}TControl(Msg.LParam){$ENDIF});
    CM_VISIBLECHANGED:
      VisibleChanged;
    CM_ENABLEDCHANGED:
      EnabledChanged;
    CM_TEXTCHANGED:
      TextChanged;
    CM_FONTCHANGED:
      FontChanged;
    CM_COLORCHANGED:
      ColorChanged;
    {$IFNDEF CLR}
    CM_FOCUSCHANGED:
      FocusChanged(TWinControl(Msg.LParam));
    {$ENDIF !CLR}
    CM_PARENTFONTCHANGED:
      ParentFontChanged;
    CM_PARENTCOLORCHANGED:
      ParentColorChanged;
    CM_PARENTSHOWHINTCHANGED:
      ParentShowHintChanged;
  else
    inherited WndProc(Msg);
  end;
end;

//============================================================================

constructor TJvExCustomControl0.Create(AOwner: TComponent);
begin
  inherited Create(AOwner);
  FHintColor := clDefault;
end;

function TJvExCustomControl0.BaseWndProc(Msg: Integer; WParam: Integer = 0; LParam: Integer = 0): Integer;
var
  Mesg: TMessage;
begin
  Mesg := CreateWMMessage(Msg, WParam, LParam);
  inherited WndProc(Mesg);
  Result := Mesg.Result;
end;

function TJvExCustomControl0.BaseWndProc(Msg: Integer; WParam: Integer; LParam: TControl): Integer;
var
  Mesg: TMessage;
begin
  Mesg := CreateWMMessage(Msg, WParam, LParam);
  inherited WndProc(Mesg);
  Result := Mesg.Result;
end;

function TJvExCustomControl0.BaseWndProcEx(Msg: Integer; WParam: Integer; var LParam): Integer;
var
  Mesg: TStructPtrMessage;
begin
  Mesg := TStructPtrMessage.Create(Msg, WParam, LParam);
  try
    inherited WndProc(Mesg.Msg);
  finally
    Result := Mesg.Msg.Result;
    Mesg.Free;
  end;
end;

procedure TJvExCustomControl0.VisibleChanged;
begin
  BaseWndProc(CM_VISIBLECHANGED);
end;

procedure TJvExCustomControl0.EnabledChanged;
begin
  BaseWndProc(CM_ENABLEDCHANGED);
end;

procedure TJvExCustomControl0.TextChanged;
begin
  BaseWndProc(CM_TEXTCHANGED);
end;

procedure TJvExCustomControl0.FontChanged;
begin
  BaseWndProc(CM_FONTCHANGED);
end;

procedure TJvExCustomControl0.ColorChanged;
begin
  BaseWndProc(CM_COLORCHANGED);
end;

procedure TJvExCustomControl0.ParentFontChanged;
begin
  BaseWndProc(CM_PARENTFONTCHANGED);
end;

procedure TJvExCustomControl0.ParentColorChanged;
begin
  BaseWndProc(CM_PARENTCOLORCHANGED);
  if Assigned(OnParentColorChange) then
    OnParentColorChange(Self);
end;

procedure TJvExCustomControl0.ParentShowHintChanged;
begin
  BaseWndProc(CM_PARENTSHOWHINTCHANGED);
end;

function TJvExCustomControl0.WantKey(Key: Integer; Shift: TShiftState; const KeyText: WideString): Boolean;
begin
  Result := BaseWndProc(CM_DIALOGCHAR, Word(Key), ShiftStateToKeyData(Shift)) <> 0;
end;

function TJvExCustomControl0.HitTest(X, Y: Integer): Boolean;
begin
  Result := BaseWndProc(CM_HITTEST, 0, SmallPointToLong(PointToSmallPoint(Point(X, Y)))) <> 0;
end;

function TJvExCustomControl0.HintShow(var HintInfo: THintInfo): Boolean;
begin
  GetHintColor(HintInfo, Self, FHintColor);
  Result := BaseWndProcEx(CM_HINTSHOW, 0, HintInfo) <> 0;
end;

procedure TJvExCustomControl0.MouseEnter(AControl: TControl);
begin
  FMouseOver := True;
  {$IFDEF VCL}
  if Assigned(FOnMouseEnter) then
    FOnMouseEnter(Self);
  {$ENDIF VCL}
  BaseWndProc(CM_MOUSEENTER, 0, AControl);
end;

procedure TJvExCustomControl0.MouseLeave(AControl: TControl);
begin
  FMouseOver := False;
  BaseWndProc(CM_MOUSELEAVE, 0, AControl);
  {$IFDEF VCL}
  if Assigned(FOnMouseLeave) then
    FOnMouseLeave(Self);
  {$ENDIF VCL}
end;

{$IFNDEF CLR}
procedure TJvExCustomControl0.FocusChanged(AControl: TWinControl);
begin
  BaseWndProc(CM_FOCUSCHANGED, 0, AControl);
end;
{$ENDIF !CLR}

{$IFDEF COMPILER5}
{$IFNDEF HASAUTOSIZE}

procedure TJvExCustomControl0.CMSetAutoSize(var Msg: TMessage);
begin
  SetAutoSize(Msg.WParam <> 0);
end;

procedure TJvExCustomControl0.SetAutoSize(Value: Boolean);
begin
  TOpenControl_SetAutoSize(Self, Value);
end;

{$ENDIF !HASAUTOSIZE}
{$ENDIF COMPILER5}

procedure TJvExCustomControl0.BoundsChanged;
begin
end;

procedure TJvExCustomControl0.CursorChanged;
begin
  BaseWndProc(CM_CURSORCHANGED);
end;

procedure TJvExCustomControl0.ShowingChanged;
begin
  BaseWndProc(CM_SHOWINGCHANGED);
end;

procedure TJvExCustomControl0.ShowHintChanged;
begin
  BaseWndProc(CM_SHOWHINTCHANGED);
end;

{$IFNDEF CLR}
{ VCL sends CM_CONTROLLISTCHANGE and CM_CONTROLCHANGE in a different order than
  the CLX methods are used. So we must correct it by evaluating "Inserting". }
procedure TJvExCustomControl0.ControlsListChanging(Control: TControl; Inserting: Boolean);
begin
  if Inserting then
    BaseWndProc(CM_CONTROLLISTCHANGE, Integer(Control), Integer(Inserting))
  else
    BaseWndProc(CM_CONTROLCHANGE, Integer(Control), Integer(Inserting));
end;

procedure TJvExCustomControl0.ControlsListChanged(Control: TControl; Inserting: Boolean);
begin
  if not Inserting then
    BaseWndProc(CM_CONTROLLISTCHANGE, Integer(Control), Integer(Inserting))
  else
    BaseWndProc(CM_CONTROLCHANGE, Integer(Control), Integer(Inserting));
end;
{$ENDIF !CLR}

procedure TJvExCustomControl0.GetDlgCode(var Code: TDlgCodes);
begin
end;

procedure TJvExCustomControl0.FocusSet(PrevWnd: THandle);
begin
  BaseWndProc(WM_SETFOCUS, Integer(PrevWnd), 0);
end;

procedure TJvExCustomControl0.FocusKilled(NextWnd: THandle);
begin
  BaseWndProc(WM_KILLFOCUS, Integer(NextWnd), 0);
end;

function TJvExCustomControl0.DoEraseBackground(Canvas: TCanvas; Param: Integer): Boolean;
begin
  Result := BaseWndProc(WM_ERASEBKGND, Canvas.Handle, Param) <> 0;
end;

{$IFDEF JVCLThemesEnabledD56}
function TJvExCustomControl0.GetParentBackground: Boolean;
begin
  Result := JvThemes.GetParentBackground(Self);
end;

procedure TJvExCustomControl0.SetParentBackground(Value: Boolean);
begin
  JvThemes.SetParentBackground(Self, Value);
end;
{$ENDIF JVCLThemesEnabledD56}

procedure TJvExCustomControl0.WndProc(var Msg: TMessage);
var
  IdSaveDC: Integer;
  DlgCodes: TDlgCodes;
  Canvas: TCanvas;
  {$IFDEF CLR}
  AHintInfo: THintInfo;
  {$ENDIF CLR}
begin
  if not DispatchIsDesignMsg(Self, Msg) then
  begin
    case Msg.Msg of
      CM_DENYSUBCLASSING:
      {$IFNDEF CLR}
      Msg.Result := Ord(GetInterfaceEntry(IJvDenySubClassing) <> nil);
      {$ELSE}
      Msg.Result := Integer(Supports(Self, IJvDenySubClassing));
      {$ENDIF !CLR}
    CM_DIALOGCHAR:
      with TCMDialogChar{$IFDEF CLR}.Create{$ENDIF}(Msg) do
        Result := Ord(WantKey(CharCode, KeyDataToShiftState(KeyData), WideChar(CharCode)));
    CM_HINTSHOW:
      {$IFNDEF CLR}
      with TCMHintShow(Msg) do
        Result := Integer(HintShow(HintInfo^));
      {$ELSE}
      with TCMHintShow.Create(Msg) do
      begin
        AHintInfo := HintInfo;
        Result := Integer(HintShow(AHintInfo));
        HintInfo := AHintInfo;
      end;
      {$ENDIF !CLR}
    CM_HITTEST:
      with TCMHitTest{$IFDEF CLR}.Create{$ENDIF}(Msg) do
        Result := Integer(HitTest(XPos, YPos));
    CM_MOUSEENTER:
      MouseEnter({$IFDEF CLR}nil{$ELSE}TControl(Msg.LParam){$ENDIF});
    CM_MOUSELEAVE:
      MouseLeave({$IFDEF CLR}nil{$ELSE}TControl(Msg.LParam){$ENDIF});
    CM_VISIBLECHANGED:
      VisibleChanged;
    CM_ENABLEDCHANGED:
      EnabledChanged;
    CM_TEXTCHANGED:
      TextChanged;
    CM_FONTCHANGED:
      FontChanged;
    CM_COLORCHANGED:
      ColorChanged;
    {$IFNDEF CLR}
    CM_FOCUSCHANGED:
      FocusChanged(TWinControl(Msg.LParam));
    {$ENDIF !CLR}
    CM_PARENTFONTCHANGED:
      ParentFontChanged;
    CM_PARENTCOLORCHANGED:
      ParentColorChanged;
    CM_PARENTSHOWHINTCHANGED:
      ParentShowHintChanged;
    CM_CURSORCHANGED:
      CursorChanged;
    CM_SHOWINGCHANGED:
      ShowingChanged;
    CM_SHOWHINTCHANGED:
      ShowHintChanged;
    {$IFNDEF CLR}
    CM_CONTROLLISTCHANGE:
      if Msg.LParam <> 0 then
        ControlsListChanging(TControl(Msg.WParam), True)
      else
        ControlsListChanged(TControl(Msg.WParam), False);
    CM_CONTROLCHANGE:
      if Msg.LParam = 0 then
        ControlsListChanging(TControl(Msg.WParam), False)
      else
        ControlsListChan