Sign in to follow this  
Followers 0
phedlund

Getting pixel color set with GUICtrlSetGraphic($graph,$GUI_GR_PIXEL, $X, $Y)

3 posts in this topic

Greetings,

I am trying to find the complimentary function of GuiCtrlSetGraphic($GR, $GUI_GR_PIXEL, $x $y)

I have tried to use PixelGetColor without success.$GR is created with GUICtrlCreateGraphic and I can

write to it ok, but its the reading back I am looking for.

Any help would be appreciated.

Share this post


Link to post
Share on other sites



phedlund,

You will need to convert the coordinates to screen values like this: ;)

#include <GUIConstantsEx.au3>
#include <WinAPI.au3>

$hGUI = GUICreate("Test", 500, 500, 100, 100)

$cGraphic = GUICtrlCreateGraphic(10, 10, 200, 200)
$hGraphic = GUICtrlGetHandle($cGraphic)

GUICtrlSetGraphic($cGraphic, $GUI_GR_COLOR, 0xFF0000, 0x00FF00)
GUICtrlSetGraphic(-$cGraphic, $GUI_GR_RECT, 10, 10, 100, 100)

$cButton_1 = GUICtrlCreateButton("Read 10, 10", 10, 200, 80, 30) ; Should be the red border
$cButton_2 = GUICtrlCreateButton("Read 11, 11", 10, 250, 80, 30) ; Should be the green interior

GUISetState()

While 1
    Switch GUIGetMsg()
        Case $GUI_EVENT_CLOSE
            Exit
        Case $cButton_1
            _GUICtrlGetGraphic(10, 10) ; Pass the coords used to draw the graphic
        Case $cButton_2
            _GUICtrlGetGraphic(11, 11)
    EndSwitch
WEnd

Func _GUICtrlGetGraphic($iX, $iY)
    ; Create a point structure
    Local $tPoint = DllStructCreate("int X;int Y")
    ; Insert the client coords
    DllStructSetData($tPoint, "X", $iX)
    DllStructSetData($tPoint, "Y", $iY)
    ; Convert the client coords to screen coords
    _WinAPI_ClientToScreen($hGraphic, $tPoint)
    ; Get the colour of the pixel using the screen coords
    $iColour = Hex(PixelGetColor(DllStructGetData($tPoint, "X"), DllStructGetData($tPoint, "Y")), 6)
    ; And announce the result
    MsgBox(0, "Pixel Colour", "The Pixel at " & $iX & ", " & $iY & " has colour: 0x" & $iColour)
EndFunc

Al clear? Please ask if not. :)

M23


Any of my own code posted anywhere on the forum is available for use by others without any restriction of any kind._______My UDFs:

Spoiler

ArrayMultiColSort ---- Sort arrays on multiple columns
ChooseFileFolder ---- Single and multiple selections from specified path treeview listing
Date_Time_Convert -- Easily convert date/time formats, including the language used
ExtMsgBox --------- A highly customisable replacement for MsgBox
GUIExtender -------- Extend and retract multiple sections within a GUI
GUIFrame ---------- Subdivide GUIs into many adjustable frames
GUIListViewEx ------- Insert, delete, move, drag, sort, edit and colour ListView items
GUITreeViewEx ------ Check/clear parent and child checkboxes in a TreeView
Marquee ----------- Scrolling tickertape GUIs
NoFocusLines ------- Remove the dotted focus lines from buttons, sliders, radios and checkboxes
Notify ------------- Small notifications on the edge of the display
Scrollbars ----------Automatically sized scrollbars with a single command
StringSize ---------- Automatically size controls to fit text
Toast -------------- Small GUIs which pop out of the notification area

 

Share this post


Link to post
Share on other sites

Yes thank you, Much clearer now. I was hoping I just missed something and there was a sub function in the GUICtrlSetGraphic that i had missed.

Your solution does make sense.

Thanks again.

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!


Register a new account

Sign in

Already have an account? Sign in here.


Sign In Now
Sign in to follow this  
Followers 0