Graphcis again.

[Aceguy 0]

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#include<GDIPlus.au3>
#include<WindowsConstants.au3>
#include<SliderConstants.au3>
#include<WinAPI.au3>



Global $hGUI, $hWnd, $hGraphic, $hPen,$Slider1
GUIRegisterMsg($WM_HSCROLL, "WM_HVSCROLL")
; Create GUI
$hGUI = GUICreate("GDI+", 400, 300)
$hWnd = WinGetHandle("GDI+")
$Slider1=GUICtrlCreateSlider(5,5,150,25,$TBS_NOTICKS)
GUISetState()

; Draw line
_GDIPlus_Startup()
$hGraphic = _GDIPlus_GraphicsCreateFromHWND($hWnd)



while 1 
sleep(200)
WEnd

; Clean up resources
_GDIPlus_PenDispose($hPen)
_GDIPlus_GraphicsDispose($hGraphic)
_GDIPlus_Shutdown()



Func WM_HVSCROLL($hWndGUI, $MsgID, $WParam, $LParam)
    Switch $LParam
        Case GUICtrlGetHandle($Slider1)
     _GDIPlus_GraphicsDrawLine($hGraphic, 10, GUICtrlRead($Slider1)+150, 390, 150, $hPen)
    _WinAPI_RedrawWindow(_WinAPI_GetDesktopWindow(), "", "", BitOR($RDW_INVALIDATE, $RDW_UPDATENOW, $RDW_FRAME, $RDW_ALLCHILDREN))      
        
EndSwitch

EndFunc  ;==>WM_HVSCROLL

[Szhlopp 15]

expandcollapse popup

#include<GDIPlus.au3>
#include<WindowsConstants.au3>
#include<SliderConstants.au3>
#include<WinAPI.au3>



Global $hGUI, $hWnd, $hGraphic, $hPen,$Slider1
GUIRegisterMsg($WM_HSCROLL, "WM_HVSCROLL")
; Create GUI
$hGUI = GUICreate("GDI+", 400, 300)
$hWnd = WinGetHandle("GDI+")
$Slider1=GUICtrlCreateSlider(5,5,150,25,$TBS_NOTICKS)
GUISetState()

; Draw line
_GDIPlus_Startup()
$hGraphic = _GDIPlus_GraphicsCreateFromHWND($hWnd)



while 1 
sleep(200)
WEnd

; Clean up resources
_GDIPlus_PenDispose($hPen)
_GDIPlus_GraphicsDispose($hGraphic)
_GDIPlus_Shutdown()



Func WM_HVSCROLL($hWndGUI, $MsgID, $WParam, $LParam)
    Switch $LParam
        Case GUICtrlGetHandle($Slider1)
     _GDIPlus_GraphicsDrawLine($hGraphic, 10, GUICtrlRead($Slider1)+150, 390, 150, $hPen)
    _WinAPI_RedrawWindow(_WinAPI_GetDesktopWindow(), "", "", BitOR($RDW_INVALIDATE, $RDW_UPDATENOW, $RDW_FRAME, $RDW_ALLCHILDREN))      
        
EndSwitch

EndFunc ;==>WM_HVSCROLL

Easy... Once you shutdown GDI you can't just call one of the functions =)

[Aceguy 0]

aaaah, thanks for quick response, but i dont have a clue how to sort it.

[dbzfanatic 0]

I tried taking out the _GDIPlus_Shutdown() function to see what would happen and it resulted in the same behavior so I doubt that _GDIPlus_Shutdown() alone is the cause.

[Szhlopp 15]

aaaah, thanks for quick response, but i dont have a clue how to sort it.

You know what. I'm a nib.

You don't ever reach the _ShutDown()

I tried this script and it draws a GDI line when I move the slider. Is that what it's supposed to do?

[Aceguy 0]

yes just want it to move the left Y axis for the moment but, it flickers like crazy, and when i stop moving the slider, nothing appears. (line dissapears)

Edited September 12, 2008 by Aceguy

[Szhlopp 15]

yes just want it to move the left Y axis for the moment but, it flickers like crazy, and when i stop moving the slider, nothing appears. (line dissapears)

Try this?

Edit: WAY less flicker (if any)

expandcollapse popup

#include<GDIPlus.au3>
#include<WindowsConstants.au3>
#include<SliderConstants.au3>
#include<WinAPI.au3>



Global $hGUI, $hWnd, $hGraphic, $hPen,$Slider1
GUIRegisterMsg($WM_HSCROLL, "WM_HVSCROLL")
; Create GUI
$hGUI = GUICreate("GDI+", 400, 300)
$hWnd = WinGetHandle("GDI+")
$Slider1=GUICtrlCreateSlider(5,5,150,25,$TBS_NOTICKS)
GUISetState()

; Draw line
_GDIPlus_Startup()
$hGraphic = _GDIPlus_GraphicsCreateFromHWND($hWnd)



while 1    
sleep(200)
WEnd

; Clean up resources
_GDIPlus_PenDispose($hPen)
_GDIPlus_GraphicsDispose($hGraphic)
_GDIPlus_Shutdown()



Func WM_HVSCROLL($hWndGUI, $MsgID, $WParam, $LParam)
    Switch $LParam
        Case GUICtrlGetHandle($Slider1)
            GUISetBkColor(0xF0F0F0)
            Sleep(1)
            _GDIPlus_GraphicsDrawLine($hGraphic, 10, GUICtrlRead($Slider1)+150, 390, 150, $hPen)
            _WinAPI_RedrawWindow(_WinAPI_GetDesktopWindow(), "", "", BitOR($RDW_INVALIDATE, $RDW_UPDATENOW, $RDW_FRAME, $RDW_ALLCHILDREN))   
            Sleep(50)
        
    EndSwitch

EndFunc ;==>WM_HVSCROLL

Edited September 12, 2008 by Szhlopp

[monoceres 181]

To avoid flickering, use a backbuffer, I posted an example a couple of days ago

#577036

If you wish to keep everything in the GUI, you better register the WM_PAINT message.

Also, I think you should call RedrawWindow before you start painting.

>_<

Edited September 12, 2008 by monoceres

[Aceguy 0]

sorry guys, thanks for you help, but im way out of my depth here.