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Problem drawing/deleting lines with _GDIPlus_GraphicsDrawLine

Legnadrak
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Legnadrak Seeker

Legnadrak

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Greetings, comunity. I'll explain my problem.

I saw the clock example that is on the examples in autoit3 (this one) and I wanted to do something similar, concretly a script that allows you to take a region screenshot: you press a Key and you capture one corner, and then you press the same key in the other corner and it takes the screenshot of the image between both corners. I wanted that the program draws lines between the corners, like drawing the image region, but I'm having serious problems while trying to delete/draw lines.

I'm not able to draw the lines of the box and then make them delete and redraw again, adjusting to the mouse position.

Can someone help me, please?

By the way, I made everything but the part in which I draw the box.

I can explain it better if something's hard to understand, and also I can give part of the screenshot taker script.

Thanks.

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Melba23 Universalist

Melba23

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Legnadrak,

Perhaps this old script of mine will give you some ideas:

#include <GuiConstantsEx.au3>
#include <WindowsConstants.au3>
#Include <ScreenCapture.au3>
#Include <Misc.au3>

Global $iX1, $iY1, $iX2, $iY2, $aPos, $sMsg, $sBMP_Path

; Create GUI
$hMain_GUI = GUICreate("Select Rectangle", 240, 50)

$hRect_Button   = GUICtrlCreateButton("Mark Area",  10, 10, 80, 30)
$hCancel_Button = GUICtrlCreateButton("Cancel",    150, 10, 80, 30)

GUISetState()

While 1

    Switch GUIGetMsg()
        Case $GUI_EVENT_CLOSE, $hCancel_Button
            FileDelete(@ScriptDir & "\Rect.bmp")
            Exit
        Case $hRect_Button
            GUISetState(@SW_HIDE, $hMain_GUI)
            Mark_Rect()
            ; Capture selected area
            $sBMP_Path = @ScriptDir & "\Rect.bmp"
            _ScreenCapture_Capture($sBMP_Path, $iX1, $iY1, $iX2, $iY2, False)
            GUISetState(@SW_SHOW, $hMain_GUI)
            ; Display image
            $hBitmap_GUI = GUICreate("Selected Rectangle", $iX2 - $iX1 + 1, $iY2 - $iY1 + 1, 100, 100)
            $hPic = GUICtrlCreatePic(@ScriptDir & "\Rect.bmp", 0, 0, $iX2 - $iX1 + 1, $iY2 - $iY1 + 1)
            GUISetState()

    EndSwitch

WEnd

; -------------

Func Mark_Rect()

    Local $aMouse_Pos, $hMask, $hMaster_Mask, $iTemp
    Local $UserDLL = DllOpen("user32.dll")

    ; Create transparent GUI with Cross cursor
    $hCross_GUI = GUICreate("Test", @DesktopWidth, @DesktopHeight - 20, 0, 0, $WS_POPUP, $WS_EX_TOPMOST)
    WinSetTrans($hCross_GUI, "", 8)
    GUISetState(@SW_SHOW, $hCross_GUI)
    GUISetCursor(3, 1, $hCross_GUI)

    Global $hRectangle_GUI = GUICreate("", @DesktopWidth, @DesktopHeight, 0, 0, $WS_POPUP, $WS_EX_TOOLWINDOW + $WS_EX_TOPMOST)
    GUISetBkColor(0x000000)

    ; Wait until mouse button pressed
    While Not _IsPressed("01", $UserDLL)
        Sleep(10)
    WEnd

    ; Get first mouse position
    $aMouse_Pos = MouseGetPos()
    $iX1 = $aMouse_Pos[0]
    $iY1 = $aMouse_Pos[1]

    ; Draw rectangle while mouse button pressed
    While _IsPressed("01", $UserDLL)

        $aMouse_Pos = MouseGetPos()

        $hMaster_Mask = _WinAPI_CreateRectRgn(0, 0, 0, 0)
        $hMask = _WinAPI_CreateRectRgn($iX1,  $aMouse_Pos[1], $aMouse_Pos[0],  $aMouse_Pos[1] + 1) ; Bottom of rectangle
        _WinAPI_CombineRgn($hMaster_Mask, $hMask, $hMaster_Mask, 2)
        _WinAPI_DeleteObject($hMask)
        $hMask = _WinAPI_CreateRectRgn($iX1, $iY1, $iX1 + 1, $aMouse_Pos[1]) ; Left of rectangle
        _WinAPI_CombineRgn($hMaster_Mask, $hMask, $hMaster_Mask, 2)
        _WinAPI_DeleteObject($hMask)
        $hMask = _WinAPI_CreateRectRgn($iX1 + 1, $iY1 + 1, $aMouse_Pos[0], $iY1) ; Top of rectangle
        _WinAPI_CombineRgn($hMaster_Mask, $hMask, $hMaster_Mask, 2)
        _WinAPI_DeleteObject($hMask)
        $hMask = _WinAPI_CreateRectRgn($aMouse_Pos[0], $iY1, $aMouse_Pos[0] + 1,  $aMouse_Pos[1]) ; Right of rectangle
        _WinAPI_CombineRgn($hMaster_Mask, $hMask, $hMaster_Mask, 2)
        _WinAPI_DeleteObject($hMask)
        ; Set overall region
        _WinAPI_SetWindowRgn($hRectangle_GUI, $hMaster_Mask)

        If WinGetState($hRectangle_GUI) < 15 Then GUISetState()
        Sleep(10)

    WEnd

    ; Get second mouse position
    $iX2 = $aMouse_Pos[0]
    $iY2 = $aMouse_Pos[1]

    ; Set in correct order if required
    If $iX2 < $iX1 Then
        $iTemp = $iX1
        $iX1 = $iX2
        $iX2 = $iTemp
    EndIf
    If $iY2 < $iY1 Then
        $iTemp = $iY1
        $iY1 = $iY2
        $iY2 = $iTemp
    EndIf

    GUIDelete($hRectangle_GUI)
    GUIDelete($hCross_GUI)
    DllClose($UserDLL)

EndFunc   ;==>Mark_Rect
I used mouse drag to define the rectangle, but the principles are the same. :)

M23

Public_Domain.png.2d871819fcb9957cf44f4514551a2935.png Any of my own code posted anywhere on the forum is available for use by others without any restriction of any kind

Open spoiler to see 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

 

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Legnadrak Seeker

Legnadrak

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Posted (edited)

Ok, I'll try it and then put the result. Thanks a lot.

Edit: Well, this is WAY BETTER than the thing that I was trying to do. You're a genius! Thanks a lot.

Edit2: Is there any possibility to add color to the rectangle? Only to the lines.

Edited by Legnadrak
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Melba23 Universalist

Melba23

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Legnadrak,

Easy - just change the background colour of the GUI - this makes it red: ;)

Global $hRectangle_GUI = GUICreate("", @DesktopWidth, @DesktopHeight, 0, 0, $WS_POPUP, $WS_EX_TOOLWINDOW + $WS_EX_TOPMOST)
GUISetBkColor(0xFF0000) ; <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
Would you like it to be draggable and resizable as well? If so then this might be of interest:

#include <GuiConstantsEx.au3>
#include <WindowsConstants.au3>
#Include <ScreenCapture.au3>

Global $hCapture_GUI
; Set distance from edge of Capture_GUI where resizing is possible
Global Const $iMargin = 4
; Set max and min Capture_GUI sizes
Global Const $iGUIMinX = 50, $iGUIMinY = 50, $iGUIMaxX = @DesktopWidth - 100, $iGUIMaxY = @DesktopHeight - 100

_Main()

Func _Main()

    Local $sBMP_Path = @ScriptDir & "\Rect.bmp"

    ; Create GUI
    Local $hMain_GUI = GUICreate("Select Rectangle", 240, 50)

    Local $hRect_Button = GUICtrlCreateButton("Mark Area", 10, 10, 80, 30)
    Local $hCancel_Button = GUICtrlCreateButton("Cancel", 150, 10, 80, 30)

    GUISetState()

    While 1
        Switch GUIGetMsg()
            Case $GUI_EVENT_CLOSE, $hCancel_Button
                FileDelete($sBMP_Path)
                Exit
            Case $hRect_Button
                GUISetState(@SW_HIDE, $hMain_GUI)
                Local $aCoords = Mark_Rect()
                ; Capture selected area
                _ScreenCapture_Capture($sBMP_Path, $aCoords[0], $aCoords[1], $aCoords[0] + $aCoords[2], $aCoords[1] + $aCoords[3], False)
                GUISetState(@SW_SHOW, $hMain_GUI)
                ; Display image
                Local $hBitmap_GUI = GUICreate("Selected Rectangle", $aCoords[2], $aCoords[3], 100, 100)
                Local $hPic = GUICtrlCreatePic(@ScriptDir & "\Rect.bmp", 0, 0, $aCoords[2], $aCoords[3])
                GUISetState()
        EndSwitch
    WEnd

EndFunc   ;==>_Main

; -------------

Func Mark_Rect()

    ; Create capture GUI
    $hCapture_GUI = GUICreate("Y", 100, 100, -1, -1, $WS_POPUP, BitOR($WS_EX_LAYERED, $WS_EX_TOPMOST))
    GUISetBkColor(0xABCDEF)

    ; Create label for dragging
    Local $cLabel = GUICtrlCreateLabel("", $iMargin * 2, $iMargin * 2, 100 - ($iMargin * 4), 100 - ($iMargin * 4), -1, $GUI_WS_EX_PARENTDRAG)
    GUICtrlSetBkColor(-1, 0xFFFFFF)
    GUICtrlSetResizing(-1, $GUI_DOCKBORDERS)

    ; Create context menu
    Local $cContextMenu = GUICtrlCreateContextMenu($cLabel)
    $cContext_Capture = GUICtrlCreateMenuItem("Capture", $cContextMenu)
    $cContext_Cancel = GUICtrlCreateMenuItem("Cancel", $cContextMenu)

    ; Hide GUI
    _WinAPI_SetLayeredWindowAttributes($hCapture_GUI, 0xABCDEF, 250)

    GUISetState()

    ; Set transparency level
    WinSetTrans($hCapture_GUI, "", 100)

    ; Register message handlers
    GUIRegisterMsg($WM_MOUSEMOVE, "_SetCursor") ; For cursor type change
    GUIRegisterMsg($WM_LBUTTONDOWN, "_WM_LBUTTONDOWN") ; For resize/drag
    GUIRegisterMsg($WM_GETMINMAXINFO, "_WM_GETMINMAXINFO") ; For GUI size limits

    While 1

        Switch GUIGetMsg()
            Case $cContext_Capture
                ; Get GUI position and delete
                $aPos = WinGetPos($hCapture_GUI)
                GUIDelete($hCapture_GUI)
                ; Unregister message handlers
                GUIRegisterMsg($WM_MOUSEMOVE, "")
                GUIRegisterMsg($WM_LBUTTONDOWN, "")
                GUIRegisterMsg($WM_GETMINMAXINFO, "")
                ; Peturn position
                Return $aPos
            Case $cContext_Cancel
                Exit
        EndSwitch
    WEnd

EndFunc   ;==>Mark_Rect

; Set cursor to correct resizing form if mouse is over a border
Func _SetCursor()
    Local $iCursorID
    Switch _Check_Border()
        Case 0
            $iCursorID = 2
        Case 1, 2
            $iCursorID = 13
        Case 3, 6
            $iCursorID = 11
        Case 5, 7
            $iCursorID = 10
        Case 4, 8
            $iCursorID = 12
    EndSwitch
    GUISetCursor($iCursorID, 1)
EndFunc   ;==>_SetCursor

; Check cursor type and resize/drag window as required
Func _WM_LBUTTONDOWN($hWnd, $iMsg, $wParam, $lParam)
    Local $iCursorType = _Check_Border()
    If $iCursorType > 0 Then ; Cursor is set to resizing style so send appropriate resize message
        $iResizeType = 0xF000 + $iCursorType
        _SendMessage($hCapture_GUI, $WM_SYSCOMMAND, $iResizeType, 0)
    EndIf
EndFunc   ;==>_WM_LBUTTONDOWN

; Determines if mouse cursor over a border
Func _Check_Border()
    Local $aCurInfo = GUIGetCursorInfo($hCapture_GUI)
    Local $aWinPos = WinGetPos($hCapture_GUI)
    Local $iSide = 0
    Local $iTopBot = 0
    If $aCurInfo[0] < $iMargin Then $iSide = 1
    If $aCurInfo[0] > $aWinPos[2] - $iMargin Then $iSide = 2
    If $aCurInfo[1] < $iMargin Then $iTopBot = 3
    If $aCurInfo[1] > $aWinPos[3] - $iMargin Then $iTopBot = 6
    Return $iSide + $iTopBot
EndFunc   ;==>_Check_Border

; Set min and max GUI sizes
Func _WM_GETMINMAXINFO($hWnd, $iMsg, $wParam, $lParam)
    $tMinMaxInfo = DllStructCreate("int;int;int;int;int;int;int;int;int;int", $lParam)
    DllStructSetData($tMinMaxInfo, 7, $iGUIMinX)
    DllStructSetData($tMinMaxInfo, 8, $iGUIMinY)
    DllStructSetData($tMinMaxInfo, 9, $iGUIMaxX)
    DllStructSetData($tMinMaxInfo, 10, $iGUIMaxY)
    Return 0
EndFunc   ;==>_WM_GETMINMAXINFO
Drag with the mouse and put the cursor close to the edge (excellent album that) to resize. Then right click once you have the rectangle where and how you want it. ;)

M23

Public_Domain.png.2d871819fcb9957cf44f4514551a2935.png Any of my own code posted anywhere on the forum is available for use by others without any restriction of any kind

Open spoiler to see 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

 

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  • 5 years later...
odaylton Wayfarer

odaylton

Posted
Posted
On 1/7/2014 at 9:30 AM, Melba23 said:

  

    ; Draw rectangle while mouse button pressed
    While _IsPressed("01", $UserDLL)

        $aMouse_Pos = MouseGetPos()

        $hMaster_Mask = _WinAPI_CreateRectRgn(0, 0, 0, 0)
        $hMask = _WinAPI_CreateRectRgn($iX1,  $aMouse_Pos[1], $aMouse_Pos[0],  $aMouse_Pos[1] + 1) ; Bottom of rectangle
        _WinAPI_CombineRgn($hMaster_Mask, $hMask, $hMaster_Mask, 2)
        _WinAPI_DeleteObject($hMask)
        $hMask = _WinAPI_CreateRectRgn($iX1, $iY1, $iX1 + 1, $aMouse_Pos[1]) ; Left of rectangle
        _WinAPI_CombineRgn($hMaster_Mask, $hMask, $hMaster_Mask, 2)
        _WinAPI_DeleteObject($hMask)
        $hMask = _WinAPI_CreateRectRgn($iX1 + 1, $iY1 + 1, $aMouse_Pos[0], $iY1) ; Top of rectangle
        _WinAPI_CombineRgn($hMaster_Mask, $hMask, $hMaster_Mask, 2)
        _WinAPI_DeleteObject($hMask)
        $hMask = _WinAPI_CreateRectRgn($aMouse_Pos[0], $iY1, $aMouse_Pos[0] + 1,  $aMouse_Pos[1]) ; Right of rectangle
        _WinAPI_CombineRgn($hMaster_Mask, $hMask, $hMaster_Mask, 2)
        _WinAPI_DeleteObject($hMask)
        ; Set overall region
        _WinAPI_SetWindowRgn($hRectangle_GUI, $hMaster_Mask)

        If WinGetState($hRectangle_GUI) < 15 Then GUISetState()
        Sleep(10)

    WEnd

 

very cool idea to create a thin border to generate the rectangle.
however if I quize myself drag a line with an arrow on the tip as it would.

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