How to detect click on GDI+ graphic?

[E1M1]

How detect when user clicks on GDI+ graphic? I am trying to make my own window control. I have read somewhere that GDI+ can be used to create new controls. I am not sure if it's right idea to use GDI+ to make custom window controls. Let me know If GDI+ isn't right method to make new window controls.

I managed to create graphic that reminds input control. But I cant invent code to detect if it's clicked.

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#include <GuiConstantsEx.au3>
#include <GDIPlus.au3>

Opt('MustDeclareVars', 1)

_Main()

Func _Main()
    Local $hGUI, $hGraphic, $hBrush
    Local $hFormat, $hFamily, $hFont, $tLayout
    Local $sString = "Hello world", $aInfo
    ; Create GUI
    $hGUI = GUICreate("GDI+", 400, 300)
    GUISetState()

    ; Fill a rectangle
    _GDIPlus_Startup ()
    $hBrush = _GDIPlus_BrushCreateSolid(0xFFFFFFFF)
    $hGraphic = _GDIPlus_GraphicsCreateFromHWND ($hGUI)
    _GDIPlus_GraphicsFillRect($hGraphic, 10, 10, 100, 25,$hBrush)
    _GDIPlus_BrushDispose($hBrush)
    $hFormat = _GDIPlus_StringFormatCreate ()
    $hFamily = _GDIPlus_FontFamilyCreate ("Arial")
    $hFont = _GDIPlus_FontCreate ($hFamily, 10, 0)
    $tLayout = _GDIPlus_RectFCreate (10, 10, 0, 0)
    $aInfo = _GDIPlus_GraphicsMeasureString ($hGraphic, $sString, $hFont, $tLayout, $hFormat)
    $hBrush = _GDIPlus_BrushCreateSolid(0xFF000000)
    _GDIPlus_GraphicsDrawStringEx ($hGraphic, $sString, $hFont, $aInfo[0], $hFormat, $hBrush)


    ; Loop until user exits
    Do
    Until GUIGetMsg() = -3

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

EndFunc   ;==>_Main

[UEZ]

Try this:

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#include <GuiConstantsEx.au3>
#include <GDIPlus.au3>

Opt('MustDeclareVars', 1)

_Main()

Func _Main()
    Local $hGUI, $hGraphic, $hBrush
    Local $hFormat, $hFamily, $hFont, $tLayout
    Local $sString = "Hello world", $aInfo, $label, $msg
    ; Create GUI
    $hGUI = GUICreate("GDI+", 400, 300)
    GUISetState()

    ; Fill a rectangle
    _GDIPlus_Startup ()
    $hBrush = _GDIPlus_BrushCreateSolid(0xFFFFFFFF)
    $hGraphic = _GDIPlus_GraphicsCreateFromHWND ($hGUI)
    $label = GUICtrlCreateLabel("", 10, 10, 100,25)
    GUICtrlSetBkColor(-1, $GUI_BKCOLOR_TRANSPARENT)
    _GDIPlus_GraphicsFillRect($hGraphic, 10, 10, 100, 25,$hBrush)

    $hFormat = _GDIPlus_StringFormatCreate ()
    $hFamily = _GDIPlus_FontFamilyCreate ("Arial")
    $hFont = _GDIPlus_FontCreate ($hFamily, 10, 0)
    $tLayout = _GDIPlus_RectFCreate (10, 10, 0, 0)
    $aInfo = _GDIPlus_GraphicsMeasureString ($hGraphic, $sString, $hFont, $tLayout, $hFormat)
    $hBrush = _GDIPlus_BrushCreateSolid(0xFF000000)
    _GDIPlus_GraphicsDrawStringEx ($hGraphic, $sString, $hFont, $aInfo[0], $hFormat, $hBrush)


    ; Loop until user exits
    While 1
        $msg = GUIGetMsg()
        Switch $msg
            Case $GUI_EVENT_CLOSE
            _GDIPlus_FontDispose ($hFont)
            _GDIPlus_FontFamilyDispose ($hFamily)
            _GDIPlus_StringFormatDispose ($hFormat)
            _GDIPlus_BrushDispose($hBrush)
            _GDIPlus_GraphicsDispose ($hGraphic)
            _GDIPlus_Shutdown ()
                Exit
            Case $label
                MsgBox(0, "Test", "Clicked on GFX")
        EndSwitch
    WEnd

    ; Clean up resources

EndFunc   ;==>_Main

Br,

UEZ

Edited February 20, 2011 by UEZ

[E1M1]

Thank you UEZ.

How do I make it grab keyboard input on mouse click? I want it to act as input control.

[kylomas]

E1M1,

Change guictrlcreatelabel to guictrlcreateinput.

I just tried this and it seems to work.

kylomas

[E1M1]

kylomas,

This replaces my graphic with input. I am trying to code my own input control.

[Melba23]

E1M1,

I am trying to code my own input control

To do that you will need to code a keylogger - and you know that you are not allowed to discuss such thing here.

M23

[E1M1]

Isnt there other way around? I dont think that all edit controls and inputs works like keylogger. I mean there are many custom controls out there in where you can type text.. Just lets think about scite. It's also custom control.

I am not discussing keylogger here. I am sure there are method to write this control with out having to write kelogger.

I wonder if there's any properties for doing what I want?Something like this $Graphic.class = $Input or something.

Problem is that when you look at my GUI with AutoIt Window info tool you won't see my custom control which means that my graphic is not even registered as control.

Maybe if I manage to register it as edit control I wouldn't have to write anything that looks like keylogger. I think once it's registered as input control windows automatically handles text I type.

Since no one has done this before in autoit I guess I would have to put that code into C++ and ask in msdn forums.

If I am right in C I could just write something like OnGraphic_Click() {...}

[Bowmore]

I think you would be very surprised if you could see how much code it takes for windows to draw a simple input box control, manage it and handle user interaction with it. Creating custom controls is a far from trivial task. Melba23 is correct, to be able to do it would require detecting all user input actions in a way that would be very useful to someone wanting to create a key logger, I realise that this is not your intention.

[E1M1]

You may be right. I go sleep now. Since scintilla is open source I am going to dig there when I wake up again. if anyone knows any open source custom controls let me know.

Edited February 19, 2011 by E1M1

[kylomas]

E1M1,

Did some Google searching and found these that you may be interested in:

http://www.google.com/url?sa=t&source=web&cd=3&sqi=2&ved=0CDkQFjAC&url=http%3A%2F%2Fwww.codeproject.com%2FKB%2Fmiscctrl%2Fcustbutton001.aspx&ei=cGpgTb_WOdO1tgf3672qDA&usg=AFQjCNGp_MfIDBbezOor0aU2AM8__uV2Pg

http://www.google.com/url?sa=t&source=web&cd=5&sqi=2&ved=0CE4QFjAE&url=http%3A%2F%2Fwww.drdobbs.com%2F184409155&ei=cGpgTb_WOdO1tgf3672qDA&usg=AFQjCNE8fr0Zr8nRGyyhwawg6KLxejRjPQ

http://www.google.com/url?sa=t&source=web&cd=8&sqi=2&ved=0CGQQFjAH&url=http%3A%2F%2Fwww.catch22.net%2Ftuts%2Fcustctrl&ei=cGpgTb_WOdO1tgf3672qDA&usg=AFQjCNGEfC7vC48bn9RtytgZbNc77p0RKA

I don't know "C" but could follow most of whats going on.

kylomas