mbColorLib: Fix DeskPickerButton.

git-svn-id: https://svn.code.sf.net/p/lazarus-ccr/svn@5483 8e941d3f-bd1b-0410-a28a-d453659cc2b4

components/mbColorLib/ScreenWin.lfm

@@ -4,6 +4,8 @@ object ScreenForm: TScreenForm
   Top = 117
   Width = 149
   Align = alClient
+  AlphaBlend = True
+  AlphaBlendValue = 1
   BorderIcons = []
   BorderStyle = bsNone
   Caption = 'Pick a color...'

components/mbColorLib/ScreenWin.pas

@@ -33,7 +33,6 @@ type
    FOnKeyDown: TKeyEvent;
 
   protected
-   procedure CreateParams(var Params:TCreateParams); override;
    procedure CMHintShow(var Message: TCMHintShow); message CM_HINTSHOW;
 
   public
@@ -62,18 +61,20 @@ begin
 end;
 
 function GetDesktopColor(const X, Y: Integer): TColor;
-{$IFDEF DELPHI}
 var
   c: TCanvas;
+  screenDC: HDC;
 begin
   c := TCanvas.Create;
   try
-   c.Handle := GetWindowDC(GetDesktopWindow);
-   Result := GetPixel(c.Handle, X, Y);
+    screenDC := GetDC(0);
+    c.Handle := screenDC;
+    Result := c.Pixels[X, Y];
   finally
     c.Free;
   end;
 end;
+(*
 {$ELSE}
 var
   bmp: TBitmap;
@@ -87,12 +88,7 @@ begin
   bmp.Free;
 end;
 {$ENDIF}
-
-procedure TScreenForm.CreateParams(var Params:TCreateParams);
-Begin
- inherited CreateParams(Params);
- Params.ExStyle := WS_EX_TRANSPARENT or WS_EX_TOPMOST;
-end;
+*)
 
 procedure TScreenForm.FormShow(Sender: TObject);
 begin
@@ -116,7 +112,10 @@ procedure TScreenForm.FormKeyDown(Sender: TObject; var Key: Word;
 begin
   if (key = VK_ESCAPE) or (ssAlt in Shift) or (ssCtrl in Shift) then
     EndSelection(0, 0, false);
- if Assigned(FOnKeyDown) then FOnKeyDown(Self, Key, Shift);
+  if (key = VK_RETURN) then
+    EndSelection(Mouse.CursorPos.X, Mouse.CursorPos.Y, true);
+  if Assigned(FOnKeyDown) then
+    FOnKeyDown(Self, Key, Shift);
 end;
 
 procedure TScreenForm.EndSelection(x, y: integer; ok: boolean);
@@ -125,8 +124,9 @@ begin
     SelectedColor := GetDesktopColor(x, y)
   else
     SelectedColor := clNone;
- close;
- if Assigned(FOnSelColorChange) then FOnSelColorChange(Self);
+  Close;
+  if Assigned(FOnSelColorChange) then
+    FOnSelColorChange(Self);
 end;
 
 procedure TScreenForm.FormMouseUp(Sender: TObject; Button: TMouseButton;
@@ -140,6 +140,7 @@ procedure TScreenForm.FormMouseMove(Sender: TObject; Shift: TShiftState; X,
 begin
   SelectedColor := GetDesktopColor(x, y);
   if Assigned(FOnSelColorChange) then FOnSelColorChange(Self);
+  Application.ProcessMessages;
 end;
 
 procedure TScreenForm.CMHintShow(var Message: TCMHintShow);

components/mbColorLib/examples/fulldemo/Demo.lpi

@@ -62,11 +62,6 @@
       <Debugging>
         <UseExternalDbgSyms Value="True"/>
       </Debugging>
-      <Options>
-        <Win32>
-          <GraphicApplication Value="True"/>
-        </Win32>
-      </Options>
     </Linking>
   </CompilerOptions>
   <Debugging>

components/mbColorLib/examples/fulldemo/main.lfm

@@ -56,7 +56,7 @@ object Form1: TForm1
         Height = 287
         Top = 8
         Width = 377
-        SelectedColor = 488198
+        SelectedColor = 488454
         HSPickerHintFormat = 'H: %h S: %s'#13'Hex: %hex'
         LPickerHintFormat = 'Luminance: %l'
         Anchors = [akTop, akLeft, akRight, akBottom]
@@ -691,6 +691,7 @@ object Form1: TForm1
         TabOrder = 0
         OnSelColorChange = mbDeskPickerButton1SelColorChange
         ScreenHintFormat = 'RGB(%r, %g, %b)'#13'Hex: %h'
+        ShowScreenHint = True
       end
       object Button3: TButton
         Left = 8

components/mbColorLib/examples/fulldemo/main.pas

@@ -211,7 +211,7 @@ end;
 
 procedure TForm1.mbColorPalette1SelColorChange(Sender: TObject);
 begin
-sc.color := mbcolorpalette1.selectedcolor;
+  uc.Color := mbColorPalette1.SelectedColor;
 end;
 
 procedure TForm1.mbColorPalette1MouseMove(Sender: TObject;
@@ -401,6 +401,7 @@ procedure TForm1.CbShowHintsChange(Sender: TObject);
 begin
   PageControl1.ShowHint := CbShowHints.Checked;
   mbOfficeColorDialog1.UseHints := CbShowHints.Checked;
+  mbDeskPickerButton1.ShowScreenHint := CbShowHints.Checked;
 end;
 
 end.

components/mbColorLib/mbDeskPickerButton.pas

@@ -51,7 +51,7 @@ constructor TmbDeskPickerButton.Create(AOwner: TComponent);
 begin
  inherited;
  DoubleBuffered := true;
- ControlStyle := ControlStyle - [csAcceptsControls] + [csOpaque{$IFDEF DELPHI_7_UP}, csParentBackground{$ENDIF}];
+// ControlStyle := ControlStyle - [csAcceptsControls] + [csOpaque{$IFDEF DELPHI_7_UP}, csParentBackground{$ENDIF}];
  FHintFmt := 'RGB(%r, %g, %b)'#13'Hex: %h';
  FShowScreenHint := false;
 end;