nend Posted October 8, 2011 Share Posted October 8, 2011 Hoi all, How can a delete a line which I made with gdi? See the codebox #include <GuiConstantsEx.au3> #include <GDIPlus.au3> Local $hGUI, $hGraphic, $hPen _GDIPlus_Startup () $hGUI = GUICreate("GDI+ test", 400, 300) $make = GUICtrlCreateButton("Make line", 10, 10, 100, 20) $delete = GUICtrlCreateButton("Delete line", 120, 10, 100, 20) GUISetState() While 1 $msg = GUIGetMsg() Switch $msg Case $make $hGraphic = _GDIPlus_GraphicsCreateFromHWND ($hGUI) $hPen = _GDIPlus_PenCreate () _GDIPlus_GraphicsDrawLine ($hGraphic, 10, 150, 390, 150, $hPen) Case $delete ;code ??? Case $GUI_EVENT_CLOSE _GDIPlus_PenDispose ($hPen) _GDIPlus_GraphicsDispose ($hGraphic) _GDIPlus_Shutdown () Exit EndSwitch Sleep(20) WEnd Link to comment Share on other sites More sharing options...
Ramzes Posted October 8, 2011 Share Posted October 8, 2011 Try this:_GDIPlus_GraphicsClear Sorry for my bad English but nobody is perfect. [font=arial, helvetica, sans-serif]Ramzes[/font] Link to comment Share on other sites More sharing options...
nend Posted October 8, 2011 Author Share Posted October 8, 2011 (edited) @ramzes, I've already looked at this function but I don't see how I insert this into the code. I already thought it had something to do with that function but i don't see how to insert it into my code. Edited October 8, 2011 by nend Link to comment Share on other sites More sharing options...
Ramzes Posted October 8, 2011 Share Posted October 8, 2011 Replace 'code ???' with function. #include <GuiConstantsEx.au3> #include <GDIPlus.au3> Local $hGUI, $hGraphic, $hPen _GDIPlus_Startup() $hGUI = GUICreate("GDI+ test", 400, 300) $make = GUICtrlCreateButton("Make line", 10, 10, 100, 20) $delete = GUICtrlCreateButton("Delete line", 120, 10, 100, 20) GUISetState() While 1 $msg = GUIGetMsg() Switch $msg Case $make $hGraphic = _GDIPlus_GraphicsCreateFromHWND($hGUI) $hPen = _GDIPlus_PenCreate() _GDIPlus_GraphicsDrawLine($hGraphic, 10, 150, 390, 150, $hPen) Case $delete _GDIPlus_GraphicsClear($hGraphic) Case $GUI_EVENT_CLOSE _GDIPlus_PenDispose($hPen) _GDIPlus_GraphicsDispose($hGraphic) _GDIPlus_Shutdown() Exit EndSwitch Sleep(20) WEnd You should change color. Sorry for my bad English but nobody is perfect. [font=arial, helvetica, sans-serif]Ramzes[/font] Link to comment Share on other sites More sharing options...
nend Posted October 8, 2011 Author Share Posted October 8, 2011 @ramzes, I've I used this function he fills up my complete gui with one color. This code is a small piece of a lot bigger code and I use a picture at the background. I've I fills this up with one color the picture is not visible anymore. Have got a other idea? Link to comment Share on other sites More sharing options...
ahmet Posted October 8, 2011 Share Posted October 8, 2011 If you know coordinates of line you can draw new line with background color. Link to comment Share on other sites More sharing options...
nend Posted October 8, 2011 Author Share Posted October 8, 2011 @ahmet, The background is a picture from a scanner with a lot of different colors so I don't think this can help me. I thinks it has something to do with layers, so you can draw on a layer and delete the layer with the button deleted, but I don't know how to do this. Anyway thanks for your help. Link to comment Share on other sites More sharing options...
martin Posted October 8, 2011 Share Posted October 8, 2011 You would need to have some way to redraw all the lines except the line you want to delete, or you save a copy of every new version and have an UNDO/REDO otion. You can store the picture as a bitmap, and have the lines drawn on another bitmap. You could have another bitmap for another layer. When a change is made you change the relevant layer(bitmap) and then recombine them all again and redraw the result. Serial port communications UDF Includes functions for binary transmission and reception.printing UDF Useful for graphs, forms, labels, reports etc.Add User Call Tips to SciTE for functions in UDFs not included with AutoIt and for your own scripts.Functions with parameters in OnEvent mode and for Hot Keys One function replaces GuiSetOnEvent, GuiCtrlSetOnEvent and HotKeySet.UDF IsConnected2 for notification of status of connected state of many urls or IPs, without slowing the script. Link to comment Share on other sites More sharing options...
nend Posted October 8, 2011 Author Share Posted October 8, 2011 @Martin, Thanks for your suggestions, it's a bit harder than I expected but I follow your directions and see where I get. I hoped that there where a function for. Thanks alot guys for all your support! Link to comment Share on other sites More sharing options...
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