jvexgrids.pas

East make Tray Icon in delphi

  if Assigned(FOnMouseLeave) then
    FOnMouseLeave(Self);
  {$ENDIF VCL}
end;

procedure TJvExCustomGrid.FocusChanged(AControl: TWinControl);
begin
  BaseWndProc(CM_FOCUSCHANGED, 0, Integer(AControl));
end;

{$IFDEF COMPILER5}
{$IFNDEF HASAUTOSIZE}

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

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

{$ENDIF !HASAUTOSIZE}
{$ENDIF COMPILER5}

procedure TJvExCustomGrid.BoundsChanged;
begin
end;

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

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

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

{ 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 TJvExCustomGrid.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 TJvExCustomGrid.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;

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

procedure TJvExCustomGrid.FocusSet(PrevWnd: HWND);
begin
  BaseWndProc(WM_SETFOCUS, Integer(PrevWnd), 0);
end;

procedure TJvExCustomGrid.FocusKilled(NextWnd: HWND);
begin
  BaseWndProc(WM_KILLFOCUS, Integer(NextWnd), 0);
end;

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

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

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

procedure TJvExCustomGrid.WndProc(var Msg: TMessage);
var
  IdSaveDC: Integer;
  DlgCodes: TDlgCodes;
  Canvas: TCanvas;
begin
  case Msg.Msg of
    CM_DENYSUBCLASSING:
      Msg.Result := Ord(GetInterfaceEntry(IJvDenySubClassing) <> nil);
    CM_DIALOGCHAR:
      with TCMDialogChar(Msg) do
        Result := Ord(WantKey(CharCode, KeyDataToShiftState(KeyData), WideChar(CharCode)));
    CM_HINTSHOW:
      with TCMHintShow(Msg) do
        Result := Integer(HintShow(HintInfo^));
    CM_HITTEST:
      with TCMHitTest(Msg) do
        Result := Integer(HitTest(XPos, YPos));
    CM_MOUSEENTER:
      MouseEnter(TControl(Msg.LParam));
    CM_MOUSELEAVE:
      MouseLeave(TControl(Msg.LParam));
    CM_VISIBLECHANGED:
      VisibleChanged;
    CM_ENABLEDCHANGED:
      EnabledChanged;
    CM_TEXTCHANGED:
      TextChanged;
    CM_FONTCHANGED:
      FontChanged;
    CM_COLORCHANGED:
      ColorChanged;
    CM_FOCUSCHANGED:
      FocusChanged(TWinControl(Msg.LParam));
    CM_PARENTFONTCHANGED:
      ParentFontChanged;
    CM_PARENTCOLORCHANGED:
      ParentColorChanged;
    CM_PARENTSHOWHINTCHANGED:
      ParentShowHintChanged;
    CM_CURSORCHANGED:
      CursorChanged;
    CM_SHOWINGCHANGED:
      ShowingChanged;
    CM_SHOWHINTCHANGED:
      ShowHintChanged;
    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
        ControlsListChanged(TControl(Msg.WParam), True);
    WM_SETFOCUS:
      FocusSet(HWND(Msg.WParam));
    WM_KILLFOCUS:
      FocusKilled(HWND(Msg.WParam));
    WM_SIZE:
      begin
        inherited WndProc(Msg);
        BoundsChanged;
      end;
    WM_ERASEBKGND:
      begin
        IdSaveDC := SaveDC(HDC(Msg.WParam)); // protect DC against Stock-Objects from Canvas
        Canvas := TCanvas.Create;
        try
          Canvas.Handle := HDC(Msg.WParam);
          Msg.Result := Ord(DoEraseBackground(Canvas, Msg.LParam));
        finally
          Canvas.Handle := 0;
          Canvas.Free;
          RestoreDC(HDC(Msg.WParam), IdSaveDC);
        end;
      end;
    WM_PRINTCLIENT, WM_PRINT: // VCL bug fix
      begin
        IdSaveDC := SaveDC(HDC(Msg.WParam)); // protect DC against changes
        try
          inherited WndProc(Msg);
        finally
          RestoreDC(HDC(Msg.WParam), IdSaveDC);
        end;
      end;
    WM_GETDLGCODE:
      begin
        inherited WndProc(Msg);
        DlgCodes := [dcNative] + DlgcToDlgCodes(Msg.Result);
        GetDlgCode(DlgCodes);
        if not (dcNative in DlgCodes) then
          Msg.Result := DlgCodesToDlgc(DlgCodes);
      end;
  else
    inherited WndProc(Msg);
  end;
end;

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

{$IFDEF COMPILER6_UP}

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

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

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

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

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

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

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

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

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

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

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

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

function TJvExCustomDrawGrid.HintShow(var HintInfo: THintInfo): Boolean;
begin
  GetHintColor(HintInfo, Self, FHintColor);
  Result := BaseWndProc(CM_HINTSHOW, 0, Integer(@HintInfo)) <> 0;
end;

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

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

procedure TJvExCustomDrawGrid.FocusChanged(AControl: TWinControl);
begin
  BaseWndProc(CM_FOCUSCHANGED, 0, Integer(AControl));
end;

{$IFDEF COMPILER5}
{$IFNDEF HASAUTOSIZE}

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

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

{$ENDIF !HASAUTOSIZE}
{$ENDIF COMPILER5}

procedure TJvExCustomDrawGrid.BoundsChanged;
begin
end;

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

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

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

{ 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 TJvExCustomDrawGrid.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 TJvExCustomDrawGrid.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;

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

procedure TJvExCustomDrawGrid.FocusSet(PrevWnd: HWND);
begin
  BaseWndProc(WM_SETFOCUS, Integer(PrevWnd), 0);
end;

procedure TJvExCustomDrawGrid.FocusKilled(NextWnd: HWND);
begin
  BaseWndProc(WM_KILLFOCUS, Integer(NextWnd), 0);
end;

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

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

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

procedure TJvExCustomDrawGrid.WndProc(var Msg: TMessage);
var
  IdSaveDC: Integer;
  DlgCodes: TDlgCodes;
  Canvas: TCanvas;
begin
  case Msg.Msg of
    CM_DENYSUBCLASSING:
      Msg.Result := Ord(GetInterfaceEntry(IJvDenySubClassing) <> nil);
    CM_DIALOGCHAR:
      with TCMDialogChar(Msg) do
        Result := Ord(WantKey(CharCode, KeyDataToShiftState(KeyData), WideChar(CharCode)));
    CM_HINTSHOW:
      with TCMHintShow(Msg) do
        Result := Integer(HintShow(HintInfo^));
    CM_HITTEST:
      with TCMHitTest(Msg) do
        Result := Integer(HitTest(XPos, YPos));
    CM_MOUSEENTER:
      MouseEnter(TControl(Msg.LParam));
    CM_MOUSELEAVE:
      MouseLeave(TControl(Msg.LParam));
    CM_VISIBLECHANGED:
      VisibleChanged;
    CM_ENABLEDCHANGED:
      EnabledChanged;
    CM_TEXTCHANGED:
      TextChanged;
    CM_FONTCHANGED:
      FontChanged;
    CM_COLORCHANGED:
      ColorChanged;
    CM_FOCUSCHANGED:
      FocusChanged(TWinControl(Msg.LParam));
    CM_PARENTFONTCHANGED:
      ParentFontChanged;
    CM_PARENTCOLORCHANGED:
      ParentColorChanged;
    CM_PARENTSHOWHINTCHANGED:
      ParentShowHintChanged;
    CM_CURSORCHANGED:
      CursorChanged;
    CM_SHOWINGCHANGED: