dfsclrbn.txt

动态提示控件

          component, property editors, etc.) are contained in this unit.  This
          was done for two primary reasons:  1) Using the component in a Delphi
          or C++Builder expert would register the component as well.  2) Reduce
          code size in some cases -- usually the smart linker removes this sort
          of stuff since the app never references it, but now it's for certain
          since it isn't even in the unit.  This change means that you need to
          install the component using the new "registration" unit instead of
          the unit containing the component.
 2.53   + Moved hard-coded strings to resourcestrings for Delphi/Builder 3 and
          higher.  They are normal consts for older compilers.  This aids in
          internationalizing an app.
 2.52   + The form that owns the button no longer appears to be inactive when
          the color palette is displayed.  I'm using FlashWindow to fool
          Windows into showing the form's caption bar in the active state.
          Many thanks to [e-mail] for this idea.
 2.51   + Minor update for Delphi 4 compatibility.
 2.50   + Added CycleColors property.  If set, clicking on the color portion of
          the button will cycle to the next palette color, and clicking on the
          arrow portion will drop down the palette.  If not set, it functions
          as before, dropping the palette no matter where it was clicked.
        + Flat buttons (Win32 only) look more like they do in IE4.  Doesn't have
          as hard of an edge on it now.
        + Clicking the button while the color palette is displayed will now hide
          the color palette instead of redisplaying it.
        + Flat buttons (Win32 only) now draw as if they were selected at
          design-time.  Behaves more like standard flat speed/toolbar buttons.
        + OtherColor property value could get reset during execution.
        + Added public property IgnoreTopmosts.  If you set this to TRUE, the
          calls to NormalizeTopMosts and RestoreTopmosts will NOT be made.
          Normally, these calls should be fine, but I have had some reports of
          strange things going on with window z-orders being changed around and
          I suspect these calls might be doing it.  If you aren't experiencing
          anything like this, you can safely ignore this property.
        + Added ShowColorHints property and related OnGetColorHintText event.
          Setting this property causes the color palette to show a hint for
          each color square that displays the RGB value of the color.  For
          example, then hint for a white square would be 'RGB = 255 255 255'.
          This hint string can be modified via the OnGetColorHintText event.
          This event is passed the TColor that needs a hint, the X, Y index into
          the palette color array (not the X,Y cursor position) where 0,0 is the
          "other" color, and a var string parameter to put the hint text in.
          This string initially will contain the default hint text, and setting
          it to an empty string ('') will prevent the hint from showing at all.
 2.11   + Added Version property.
 2.10   + 32-bit version now has a keyboard interface.  Works as you would
          expect: left, right, up and down keys move around.  Won't work in
          Delphi 1 because of a VCL bug that insists on focusing the "Other"
          button.  D2, D3, C1 and C3 do not have this problem.
 2.01   + Fixed CustomColors property editor.  It was not wide enough for all
          of the color boxes.
        + Fixed internal compiler error when compiled under C++Builder 1 with
          Pascal compiler options enabled.
        + Fixed problem with C++Builder 3 run-time packages.
 2.00   + The "stream read error" fix broke something else; PaletteColors and
          CustomColors properties would never write updated data, so any changes
          you made to them at design-time would be lost if you viewed them as
          text or closed the form.  I've REALLY fixed it this time, but I've
          broken previous versions because the streaming mechanism changed
          again (for the LAST time, NEVER AGAIN, I promise).  Make sure you
          read the README.NOW file if you are upgrading from a previous version.
        + There was no visual indication if the button was disabled (Enabled
          property set to false).  The color box is now "shaded" out and the
          drop down arrow is gray.
        + Added work-around for a bug in the Delphi 2 compiler.  With
          optimizations enabled, the DrawItem method would not compile.  I've
          selectively turned off compiler optimization for that routine if you
          are compiling under Delphi 2.
        + Framing rectangles in the color palette were not using system defined
          3D colors.  The also suffered from the LineTo problem that the drop
          down arrow used to.  Thanks to J. C. Kiran <[e-mail]> for
          this one.
        + Fixed problem with EnumObjects call causing GPFs under Delphi 1.
          Thanks go to Bruno Sonnino <[e-mail]> for this one.
 1.80   + Fixed the "stream read error" when trying to copy the component or
          edit a form containing it as text.  Unfortunately, this makes it
          incompatible with previous versions of the component.  You will have
          to manually remove any TdfsColorButton components you have on your
          forms.  Next, open the CBtnForm.pas file and remove the period from
          the first line so that it reads:
            {$DEFINE FIX_STREAM_ERROR}
          Now recompile the component into Delphi and re-add the component to
          your form(s).  You can now cut/paste and edit the form as text.
          In case you are wondering, the fix is not enabled by default because
          I know MANY of you don't read this information until after you've
          tried playing around with it in the IDE.  I didn't want to break
          everyone's code:  form's won't even load at all if they have an old
          version of the component on them.  :(
          Many appologies for letting this one slip past me.
          I will phase out the $DEFINE in the next version, so please don't
          put off making this change any longer than you have to.
        + Selection palette is now taskbar aware.  That is, if the palette would
          be partially covered by a non-autohide task bar, it now repositions
          itself to avoid this.  It also does the same if would be partially
          obscured because it is to close to the left or right edge of the
          screen.
        + Delphi 2, 3 and C++B version has a new property: Flat.  Works like
          the toolbar button's Flat property.  If someone REALLY needs this
          property for Delphi 1, I'll look into adding it.
        + Fixed problem where palette wasn't visible if the button was on a
          fsTopMost FormStyle form.
 1.71   + Renamed main unit ColorBtn.pas to DFSClrBn.pas to avoid conflict
          with an existing unit from another author.  You will need to modify
          the uses clauses in your units that use ColorBtn.  Sorry.
 1.70   + Added OtherBtnCaption property to allow you to change the caption
          of the "Other" button that appears on the color palette.  Good for
          folks who don't want English text on their buttons (oops).  Thanks
          to Kerstin Thaler <[e-mail]> for this.
        + OtherColor property was never set to the palette, only retrieved.
 1.66   + Fixed problem with the arrow not drawing correctly on some machines.
          I don't know what is causing it, but I've switched over to using a
          bitmap so it shouldn't be a problem any more.  The ARROW_DRAWING_BUG
          define no longer exists.
 1.65   + Added OnColorChange event.
        + One person has reported that the arrow on the button does not appear
          to be drawn correctly.  I can not duplicate this problem, but if the
          arrow appears incorrectly for you, try enabling ARROW_DRAWING_BUG
          define at the top of COLORBTN.PAS.
 1.60   + Upgraded the property editor for PaletteColors and CustomColors so
          that it supports multiple selections.
        + Updated for new DFS.INC file, component tab name, history/comments
          file.
 1.50:  + Added published properties PaletteColors and CustomColors, and
          a property editor so they can be set at design time.
        + Added automatic saving of custom colors (the ones the user sets in
          the dialog).  Just fill in the CustomColorsKey (D2/D3) or the
          CustomColorsINI (D1).  Leave it blank to not save them.
 1.00:  + Initial release.