Slider question

[skiman]

Hi Jimmy,

I looked at your sample, and it looks and works very well. Your code is also very easy to read. It think it is rather easy to add it as an addition to Express++, so it uses the same syntax.

The original question from Jack was to have a control with TWO sliders. This way you can set a MIN and a MAX on one slider bar. I saw that you can set some 'scope' with min and max, but is it possible to adjust it by the user?

[Auge_Ohr]

The original question from Jack was to have a control with TWO sliders. This way you can set a MIN and a MAX on one slider bar. I saw that you can set some 'scope' with min and max, but is it possible to adjust it by the user?

this was my Question which Action to use ?

press a Key ( F_xx ) and open a Input Window ?
o:LbDown seems me wrong while used internal so i think better using o:RbDown ?

[skiman]

From a user point, it should be lbDown.

[Auge_Ohr]

From a user point, it should be lbDown.

how do you want to move Slider ... it need lbDown
yes ... it is possible but need more Code to find out what User mean.
so i have activate RbDown / RbUp to move Tick Marker "on-fly"

DXEslider4.jpg (40.24 KiB) Viewed 15658 times

Problem : i got Slider Position as Tick (o:Range). now need to calculate relative Position in Pixel.

i have test it with LANDSCAPE, PORTRAIT still under Construction.
i include Codeblock Slot "bPos2Pixel" and "Per2Pixel" so you can make your own Code for calculation.

---

i have try to activate Ownerdraw as known from Xbase++ but i did not find a API Constant for it

Code: Select all

#define LVS_OWNERDRAWFIXED       0x0400
#define SBT_OWNERDRAW            0x1000
#define TCS_OWNERDRAWFIXED       0x2000
#define HDF_OWNERDRAW            0x8000
#define LBS_OWNERDRAWFIXED       0x0010
#define LBS_OWNERDRAWVARIABLE    0x0020
#define CBS_OWNERDRAWFIXED       0x0010
#define CBS_OWNERDRAWVARIABLE    0x0020
#define MF_OWNERDRAW             0x00000100
#define MFT_OWNERDRAW            MF_OWNERDRAW
#define BS_OWNERDRAW             0x0000000B
#define SS_OWNERDRAW             0x0000000D

but none of them seem to fit TRACKBAR_CLASS ? all Sample which i found work with Customdraw.

here latest DLL / LIB and Demo Source, look at READ.ME

DXESLIDE4.ZIP

DLL / LIB v1.9.355
need ot4xb

(47.98 KiB) Downloaded 975 times

[rdonnay]

It think it is rather easy to add it as an addition to Express++, so it uses the same syntax.

Anything like this CAN be added to eXpress++ but I will not do this anymore. I made that mistake with MXPUSHBUTTONS and it was eventually not supported. I replaced that with a much better solution: DCPUSHBUTTONXP.

What I WILL DO is make it easier to add your own custom objects like this. I will write a sample program to show how to do this. This can be done now with @ .. DCCUSTOM, but it limits your syntax.

I was nearly done with a slider sample that is written in eXpress++, but now I think I will go in a different direction and make it easier to use Jimmy's solution because it is much more robust.

[Auge_Ohr]

hi,

this native Trackbar Control does not exist in Xbase++ so it is different to MXPUSHBUTTONS.
we also do not have Listview or Rebar. other like DatePick or MonthDay need activeX if not using native Control.
to avoid activeX i start those native Control and DXD Lib.

---

New v5

visual Style :
i have add visual Style for TBCD_CHANNEL when using Customdraw Color
now it is smaller and fit into visual Style Retangle

DXEslider5.jpg (41.63 KiB) Viewed 15632 times

i also add visual Style for TBCD_TICS ... nothing happend ... hm

i try to change "Hot" Color of TBCD_THUMB this Way

Code: Select all

   IF nState = CDIS_FOCUS .OR. nState = nOR(CDIS_FOCUS,CDIS_SELECTED)
      @GDI32:SelectObject(hdc,::HiBackColor)
   ELSE
      @GDI32:SelectObject(hdc,::ClrTHUMB )
   ENDIF

but Eclipse does not change COlor ...
same happend when using visual Style Parts ( now possible, see Picture )

i can display right Style Parts but it seem not to react on uItemState ... hm
https://msdn.microsoft.com/en-us/librar ... 85%29.aspx
so i still got no "Hot" State to react on it

Question : what about Icon or Bitmap for Slider Thumb ?

do we need it (now) or is native Trackbar Control good enough to release Source now ?

[Auge_Ohr]

Control Style (-> iVar) must set before o:Create(), Methode work after o:Create()

iVar
https://msdn.microsoft.com/en-us/librar ... 85%29.aspx

Code: Select all

	// set TBS_ Constante
	//
	VAR Autoticks	-> TBS_AUTOTICKS	       Default .T. // default
	VAR NoTicks	  -> TBS_NOTICKS		      Default .F. // no Ticks
	VAR PosBoth	  -> TBS_BOTH		         Default .F. // Ticks on both Side
	VAR PosTop	   -> TBS_TOP		          Default .F. // need TBS_HORZ (LANDSCAPE)
	VAR PosBottom	-> TBS_BOTTOM		       Default .T. // need TBS_HORZ (LANDSCAPE)
	VAR PosLeft	  -> TBS_LEFT		         Default .F. // need TBS_VERT (PORTRAIT)
	VAR PosRight	 -> TBS_RIGHT		        Default .T. // need TBS_VERT (PORTRAIT)
	VAR SelRange	 -> TBS_ENABLESELRANGE     Default .T. // need to SetScope()
	VAR Fixedlength -> TBS_FIXEDLENGTH	     Default .F. // need to change Thumbs Size
	VAR NoThumb     -> TBS_NOTHUMB		      Default .F. // no Thumbs
	VAR Tooltips	 -> TBS_TOOLTIPS		     Default .T. // show Tooltip (when press Thumb)
	VAR Reversed	 -> TBS_REVERSED		     Default .F. // Flag only ? 
	VAR DownIsLeft  -> TBS_DOWNISLEFT	      Default .T. // hm ... ?
	VAR BeforeMove  -> TBS_NOTIFYBEFOREMOVE	Default .F. // since Vista, under Construction
	VAR TransBkGnd  -> TBS_TRANSPARENTBKGND	Default .F. // since Vista, under Construction
   
	// NEED Customdraw
	//
	VAR PaintStyle	-> "ECIPILS" / "RETANGLE" / "VISUAL" -> Default

METHOD

Code: Select all

	SetThumblength(nValue)	-> set Size of TBCD_THUMB -> TBCD_CHANNEL wide 
		   		   NEED : Fixedlength := .T. and Customdraw

	SetPageSize(nValue)	-> Sets the number of logical positions the trackbar's slider moves
				   in response to keyboard input, such as the or keys, or mouse input,
				   such as clicks in the trackbar's channel

	SetLineSize(nValue)	-> Sets the number of logical positions the trackbar's slider moves
				   in response to keyboard input from the arrow keys, such as the or keys.

* -------- fixed Code -------- *

visual Style

Code: Select all

	IF lAnd( nState, nOR(CDIS_FOCUS,CDIS_SELECTED))
	   @GDI32:SelectObject(hdc,::HiBackColor)
	ELSE
	   @GDI32:SelectObject(hdc,::ClrTHUMB )
	ENDIF

now will work when Select/Press Thumb

* ------ known Problem ------- *

still got no "HOT" visual Style ... hm ...

DXESLIDE6.ZIP

DLL / LIB v1.9.355
need ot4xb

(51.11 KiB) Downloaded 1029 times

[Auge_Ohr]

hi,

i think "green" Sample it now about what Jack want

DXEslider9.jpg (71.69 KiB) Viewed 15595 times

it use

Code: Select all

   ::NoThumb := .T.

so no Thumb is used and Marker will display in Trackbar Channel.

as you can see Marker / Thumbs can now be a Image (ICO,BMP)
i include Gradient for Trackbar Channel ( when no Scope used )
also Control Background Color can be changed ( do not ask me for Gradient here ... )

have fun

DXESLIDE9.ZIP

DLL / LIB v1.9.355

(75.58 KiB) Downloaded 920 times

[skiman]

Hi,

I got this error when running dxeslide.

Code: Select all

oError:args         :
          -> VALTYPE: A VALUE: {"USER32", "InvalidateRect"}
          -> VALTYPE: U VALUE: NIL
          -> VALTYPE: N VALUE: 1
oError:canDefault   : N
oError:canRetry     : N
oError:canSubstitute: Y
oError:cargo        : NIL
oError:description  : Internal data structures corrupted
oError:filename     : 
oError:genCode      :         41
oError:operation    : NFPCALL
oError:osCode       :          0
oError:severity     :          2
oError:subCode      :          5
oError:subSystem    : BASE
oError:thread       :          1
oError:tries        :          0
------------------------------------------------------------------------------
CALLSTACK:
------------------------------------------------------------------------------
Called from DXE_SLIDER:_SETNEWHFONT(1891)
Called from DXE_SLIDER:_PRESPARA(1817)
Called from DXE_SLIDER:CREATE(2121)
Called from MAIN(78)

[Auge_Ohr]

I got this error when running dxeslide.

Code: Select all

          -> VALTYPE: A VALUE: {"USER32", "InvalidateRect"}

Called from DXE_SLIDER:_SETNEWHFONT(1891)
Called from DXE_SLIDER:_PRESPARA(1817)
Called from DXE_SLIDER:CREATE(2121)
Called from MAIN(78)

hm ... please try without Font in Presentation Parameter for DXESLIDER() Control. i will check it.