>>>>Dear All,
>>>>
>>>>Is there any way to draw directly to a form surface
>>>>with form scrollbars enabled ?
>>>>
>>>>TIA
>>>>Sergio
>>>
>>>
>>>Hi Sergio,
>>>
>>>That's totally possible, why not ?
>>>Are you trying to draw in a topLevel form ?
>>>If yes, there's a small trick to obtain the surface HWND:
>>>
>>>

LOCAL lnHWnd
>>>IF Thisform.ShowWindow = 2 && TopLevel Form
>>>	lnHWnd=SYS(2327, SYS(2325, SYS(2326,Thisform.HWnd))) && From Craig Boyd
>>>ELSE
>>>	lnHWnd = Thisform.HWnd
>>>ENDIF

>>>
>>>Is this what you are looking for ?
>>
>>
>>Hi Cesar,
>>
>>I am trying to draw on ordinary modeless form.
>>ShowWindow is by default 0 (In Screen)
>>
>>Without scrollbars everything shows just fine
>>as soon I enable toolbars - nothing shows :(
>>
>>Maybe never version of GdiPlusX ?
>>This one I am working with I downloaded about month ago
>>(Forgot number)
>>
>>TIA
>
>
>Hi Sregio,
>
>This has nothing to do with the version of Gdi+X
>
>I've tried here, and you are correct... This is totally strange...
>
>But I made it work. The solution is really tricky, but seems to be reliable:
>
>
>My conclusion is that when the form has a ScrollBar, a new window is added to it, and this makes a big confusion. The original solution I gave you would not work because it was getting the HWND from the ScrollBars !
>
>For this situation, VFP adds the ScrollBars after the INIT() event is fired, so you can't put the suggestion I will give to you on INIT().
>
>
>
>
>Follow These Steps:
>
>1 - In INIT()
>
>

DO LOCFILE("System.prg")
>Thisform.AddProperty("RealHWND", 0)

>
>
>
>2 - In ACTIVATE() of your form:
>
>

IF Thisform.RealHWND <> 0
>	DODEFAULT()
>	RETURN
>ENDIF
>
>
>
>DECLARE INTEGER GetWindowRect IN user32 INTEGER hwnd, STRING @lpRect
>DECLARE INTEGER WindowFromPoint IN WIN32API INTEGER x, INTEGER y
>
>#DEFINE EMPTY_RECT   REPLICATE(CHR(0),16)
>
>LOCAL lcRect, lnLeft, lnTop
>lcRect = EMPTY_RECT
>= GetWindowRect(Thisform.hWnd, @lcRect)
>lnLeft = CTOBIN(SUBSTR(lcRect, 1,4),"4RS")
>lnTop  = CTOBIN(SUBSTR(lcRect, 5,4),"4RS")
>
>
>LOCAL lnTitleHeight, lnLeftBorder, lnTopBorder, x1, y1
>lnTitleHeight = SYSMETRIC(9)
>lnLeftBorder = SYSMETRIC(3)
>lnTopBorder = SYSMETRIC(4)
>
>x1 = lnLeftBorder
>y1 = lnTitleHeight + lnTopBorder
>
>Thisform.RealHWND = WindowFromPoint(lnLeft + x1, lnTop + y1)
>
>DODEFAULT()
>
>RETURN

>
>
>
>3 - Create any commandButton, and add the following code:
>
>

WITH _Screen.System.Drawing
>	loGfx = .Graphics.FromHwnd(Thisform.RealHWND)
>	loGfx.FillRectangle(.Brushes.Red, 0,0,100,100)
>ENDWITH

>
>
>Hope this helps you to get started.
>I'm sure I'll find a better way to do that, but for the moment, this was the simplest solution that came to my mind.
>
>
>Hope this helps
>
>Cesar



I've just found another good and maybe better way to retrieve the HWND:

http://www.news2news.com/vfp/?example=27&function=39


The related sample gets the HWNDS from all desktop windows.
Just change the code and send the Main HWND from your form and you'll have the correct value as well