| 1 | ;; Something_Wrong_Between_Docking_and_GUI_ScrollBars.au3
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| 2 | ;; Notes:
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| 3 | ;; 1. This script is based upon the example in the AutoIt help
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| 4 | ;; file for UDF function _GUIScrollBars_Init. Similar effects
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| 5 | ;; can be observed using that example, although the child GUIs
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| 6 | ;; seem to behave correctly.
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| 7 | ;;
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| 8 | ;; 2. Melba23's UDF, "Scrollbars Made Easy" also exhibits issue #1, but not #2.
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| 9 | ;; http://www.autoitscript.com/forum/topic/113723-scrollbars-made-easy-new-version-9-aug-14/
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| 10 |
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| 11 | #include <GUIConstantsEx.au3>
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| 12 | #include <GuiScrollBars.au3>
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| 13 | #include <StructureConstants.au3>
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| 14 | #include <WindowsConstants.au3>
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| 15 |
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| 16 | Example()
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| 17 |
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| 18 | Func Example()
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| 19 | Local $hGUIMsg, $hGUI
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| 20 |
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| 21 | Local $iMaxHScroll = 425
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| 22 | Local $iMaxVScroll = 325
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| 23 |
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| 24 | Local $iGUIHeight = 300
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| 25 |
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| 26 | $hGUI = GUICreate("2 ScrollBar Issues", 400, $iGUIHeight, -1, -1, BitOR($WS_MINIMIZEBOX, $WS_CAPTION, $WS_POPUP, $WS_SYSMENU, $WS_SIZEBOX))
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| 27 | GUISetBkColor(0x88AABB)
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| 28 |
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| 29 | $b0 = GUICtrlCreateButton("0,0 x 100,40", 0, 0, 100, 40)
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| 30 | GUICtrlSetResizing(-1, $GUI_DOCKALL)
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| 31 |
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| 32 | $b1 = GUICtrlCreateButton("Show Issue 1", 120, 0, 100, 40)
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| 33 | GUICtrlSetResizing(-1, $GUI_DOCKALL)
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| 34 |
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| 35 | $b2 = GUICtrlCreateButton("Show Issue 2", 230, 0, 100, 40)
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| 36 | GUICtrlSetResizing(-1, $GUI_DOCKALL)
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| 37 |
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| 38 | Local $sIssue1 = _
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| 39 | " 1. Start the script." & @LF & _
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| 40 | " 2. Note the location of the leftmost button is 0,0." & @LF & _
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| 41 | " 3. Drag the horizontal scroll bar a little to the right." & @LF & _
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| 42 | " The left button scrolls off the left side as it should." & @LF & _
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| 43 | " So far, all is well." & @LF & _
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| 44 | " 4. Drag the bottom of the GUI up or down, noting that the button" & @LF & _
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| 45 | " moves completely into view (it should NOT do that!)." & @LF & _
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| 46 | " This note moves too, just like the button." & @LF & _
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| 47 | " 5. Drag the horizontal scroll bar all the way to the left." & @LF & _
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| 48 | " 6. Note the location of the leftmost button and this note. " & @LF & _
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| 49 | " They're NOT where they should be. The leftmost button" & @LF & _
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| 50 | " should be at 0,0. Click that button to get its position." & @LF & _
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| 51 | " 7. Drag the bottom of the GUI up or down, " & @LF & _
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| 52 | " and the button repositions correctly." & @LF & _
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| 53 | " 8. The same thing happens with the vertical scroll bar," & @LF & _
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| 54 | " and/or combinations of dragging the GUI borders." & @LF & _
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| 55 | " 9. This is NOT an issue if the window cannot be resized." & @LF & _
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| 56 | "10. This same issue occurs in Melba23's 'Scrollbars Made Easy' UDF."
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| 57 |
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| 58 | Local $sIssue2 = _
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| 59 | " 1. The height of the vertical scroll bar thumb, and its maximum " & @LF & _
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| 60 | " range are incorrect. Since the height of the GUI is " & $iGUIHeight & ", and" & @LF & _
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| 61 | " function _GUIScrollBars_Init specifies the maximum vertical " & @LF & _
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| 62 | " value as " & $iMaxVScroll & ", the height of the thumb should be greater" & @LF & _
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| 63 | " then it is, and the movement should be very little, much like" & @LF & _
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| 64 | " the horizontal scroll bar."
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| 65 |
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| 66 |
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| 67 | ;; Start with Issue 1 displayed in the label
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| 68 | $l1 = GUICtrlCreateLabel($sIssue1, 60, 45, 400, 240)
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| 69 | GUICtrlSetResizing(-1, $GUI_DOCKALL)
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| 70 | GUICtrlSetBkColor(-1, 0xffffff)
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| 71 |
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| 72 | GUIRegisterMsg($WM_SIZE, "WM_SIZE")
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| 73 | GUIRegisterMsg($WM_VSCROLL, "WM_VSCROLL")
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| 74 | GUIRegisterMsg($WM_HSCROLL, "WM_HSCROLL")
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| 75 |
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| 76 | GUISetState(@SW_SHOW)
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| 77 |
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| 78 | ;; _GUIScrollBars_Init($hGUI)
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| 79 | _GUIScrollBars_Init($hGUI, $iMaxHScroll, $iMaxVScroll)
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| 80 |
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| 81 | While 1
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| 82 | $hGUIMsg = GUIGetMsg()
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| 83 |
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| 84 | Switch $hGUIMsg
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| 85 | Case $GUI_EVENT_CLOSE
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| 86 | ExitLoop
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| 87 |
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| 88 | Case $b0
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| 89 | Local $a1 = ControlGetPos("2 ScrollBar Issues", "", $b0)
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| 90 | MsgBox(4096, "Button Position", "The position of this button is " & $a1[0] & "," & $a1[1])
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| 91 |
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| 92 | Case $b1
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| 93 | ;; Display issue 1
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| 94 | GUICtrlSetData($l1, $sIssue1)
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| 95 |
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| 96 | Case $b2
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| 97 | ;; Display issue 2
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| 98 | GUICtrlSetData($l1, $sIssue2)
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| 99 |
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| 100 | EndSwitch
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| 101 | WEnd
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| 102 |
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| 103 | Exit
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| 104 | EndFunc ;==>Example
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| 105 |
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| 106 |
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| 107 | Func WM_SIZE($hWnd, $iMsg, $wParam, $lParam)
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| 108 | #forceref $iMsg, $wParam
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| 109 | Local $iIndex = -1, $iCharY, $iCharX, $iClientMaxX, $iClientX, $iClientY, $iMax
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| 110 | For $x = 0 To UBound($__g_aSB_WindowInfo) - 1
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| 111 | If $__g_aSB_WindowInfo[$x][0] = $hWnd Then
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| 112 | $iIndex = $x
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| 113 | $iClientMaxX = $__g_aSB_WindowInfo[$iIndex][1]
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| 114 | $iCharX = $__g_aSB_WindowInfo[$iIndex][2]
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| 115 | $iCharY = $__g_aSB_WindowInfo[$iIndex][3]
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| 116 | $iMax = $__g_aSB_WindowInfo[$iIndex][7]
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| 117 | ExitLoop
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| 118 | EndIf
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| 119 | Next
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| 120 | If $iIndex = -1 Then Return 0
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| 121 |
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| 122 | Local $tSCROLLINFO = DllStructCreate($tagSCROLLINFO)
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| 123 |
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| 124 | ; Retrieve the dimensions of the client area.
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| 125 | $iClientX = BitAND($lParam, 0x0000FFFF)
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| 126 | $iClientY = BitShift($lParam, 16)
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| 127 | $__g_aSB_WindowInfo[$iIndex][4] = $iClientX
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| 128 | $__g_aSB_WindowInfo[$iIndex][5] = $iClientY
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| 129 |
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| 130 | ; Set the vertical scrolling range and page size
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| 131 | DllStructSetData($tSCROLLINFO, "fMask", BitOR($SIF_RANGE, $SIF_PAGE))
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| 132 | DllStructSetData($tSCROLLINFO, "nMin", 0)
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| 133 | DllStructSetData($tSCROLLINFO, "nMax", $iMax)
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| 134 | DllStructSetData($tSCROLLINFO, "nPage", $iClientY / $iCharY)
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| 135 | _GUIScrollBars_SetScrollInfo($hWnd, $SB_VERT, $tSCROLLINFO)
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| 136 |
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| 137 | ; Set the horizontal scrolling range and page size
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| 138 | DllStructSetData($tSCROLLINFO, "fMask", BitOR($SIF_RANGE, $SIF_PAGE))
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| 139 | DllStructSetData($tSCROLLINFO, "nMin", 0)
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| 140 | DllStructSetData($tSCROLLINFO, "nMax", 2 + $iClientMaxX / $iCharX)
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| 141 | DllStructSetData($tSCROLLINFO, "nPage", $iClientX / $iCharX)
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| 142 | _GUIScrollBars_SetScrollInfo($hWnd, $SB_HORZ, $tSCROLLINFO)
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| 143 |
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| 144 | Return $GUI_RUNDEFMSG
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| 145 | EndFunc ;==>WM_SIZE
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| 146 |
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| 147 | Func WM_HSCROLL($hWnd, $iMsg, $wParam, $lParam)
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| 148 | #forceref $iMsg, $lParam
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| 149 | Local $iScrollCode = BitAND($wParam, 0x0000FFFF)
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| 150 |
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| 151 | Local $iIndex = -1, $iCharX, $iPosX
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| 152 | Local $iMin, $iMax, $iPage, $iPos, $iTrackPos
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| 153 |
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| 154 | For $x = 0 To UBound($__g_aSB_WindowInfo) - 1
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| 155 | If $__g_aSB_WindowInfo[$x][0] = $hWnd Then
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| 156 | $iIndex = $x
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| 157 | $iCharX = $__g_aSB_WindowInfo[$iIndex][2]
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| 158 | ExitLoop
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| 159 | EndIf
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| 160 | Next
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| 161 | If $iIndex = -1 Then Return 0
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| 162 |
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| 163 | ; ; Get all the horizontal scroll bar information
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| 164 | Local $tSCROLLINFO = _GUIScrollBars_GetScrollInfoEx($hWnd, $SB_HORZ)
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| 165 | $iMin = DllStructGetData($tSCROLLINFO, "nMin")
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| 166 | $iMax = DllStructGetData($tSCROLLINFO, "nMax")
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| 167 | $iPage = DllStructGetData($tSCROLLINFO, "nPage")
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| 168 | ; Save the position for comparison later on
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| 169 | $iPosX = DllStructGetData($tSCROLLINFO, "nPos")
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| 170 | $iPos = $iPosX
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| 171 | $iTrackPos = DllStructGetData($tSCROLLINFO, "nTrackPos")
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| 172 | #forceref $iMin, $iMax
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| 173 | Switch $iScrollCode
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| 174 |
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| 175 | Case $SB_LINELEFT ; user clicked left arrow
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| 176 | DllStructSetData($tSCROLLINFO, "nPos", $iPos - 1)
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| 177 |
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| 178 | Case $SB_LINERIGHT ; user clicked right arrow
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| 179 | DllStructSetData($tSCROLLINFO, "nPos", $iPos + 1)
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| 180 |
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| 181 | Case $SB_PAGELEFT ; user clicked the scroll bar shaft left of the scroll box
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| 182 | DllStructSetData($tSCROLLINFO, "nPos", $iPos - $iPage)
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| 183 |
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| 184 | Case $SB_PAGERIGHT ; user clicked the scroll bar shaft right of the scroll box
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| 185 | DllStructSetData($tSCROLLINFO, "nPos", $iPos + $iPage)
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| 186 |
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| 187 | Case $SB_THUMBTRACK ; user dragged the scroll box
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| 188 | DllStructSetData($tSCROLLINFO, "nPos", $iTrackPos)
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| 189 | EndSwitch
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| 190 |
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| 191 | ; // Set the position and then retrieve it. Due to adjustments
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| 192 | ; // by Windows it may not be the same as the value set.
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| 193 |
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| 194 | DllStructSetData($tSCROLLINFO, "fMask", $SIF_POS)
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| 195 | _GUIScrollBars_SetScrollInfo($hWnd, $SB_HORZ, $tSCROLLINFO)
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| 196 | _GUIScrollBars_GetScrollInfo($hWnd, $SB_HORZ, $tSCROLLINFO)
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| 197 | ;// If the position has changed, scroll the window and update it
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| 198 | $iPos = DllStructGetData($tSCROLLINFO, "nPos")
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| 199 | If ($iPos <> $iPosX) Then _GUIScrollBars_ScrollWindow($hWnd, $iCharX * ($iPosX - $iPos), 0)
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| 200 | Return $GUI_RUNDEFMSG
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| 201 | EndFunc ;==>WM_HSCROLL
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| 202 |
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| 203 | Func WM_VSCROLL($hWnd, $iMsg, $wParam, $lParam)
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| 204 | #forceref $iMsg, $wParam, $lParam
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| 205 | Local $iScrollCode = BitAND($wParam, 0x0000FFFF)
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| 206 | Local $iIndex = -1, $iCharY, $iPosY
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| 207 | Local $iMin, $iMax, $iPage, $iPos, $iTrackPos
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| 208 |
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| 209 | For $x = 0 To UBound($__g_aSB_WindowInfo) - 1
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| 210 | If $__g_aSB_WindowInfo[$x][0] = $hWnd Then
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| 211 | $iIndex = $x
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| 212 | $iCharY = $__g_aSB_WindowInfo[$iIndex][3]
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| 213 | ExitLoop
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| 214 | EndIf
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| 215 | Next
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| 216 | If $iIndex = -1 Then Return 0
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| 217 |
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| 218 | ; Get all the vertial scroll bar information
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| 219 | Local $tSCROLLINFO = _GUIScrollBars_GetScrollInfoEx($hWnd, $SB_VERT)
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| 220 | $iMin = DllStructGetData($tSCROLLINFO, "nMin")
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| 221 | $iMax = DllStructGetData($tSCROLLINFO, "nMax")
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| 222 | $iPage = DllStructGetData($tSCROLLINFO, "nPage")
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| 223 | ; Save the position for comparison later on
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| 224 | $iPosY = DllStructGetData($tSCROLLINFO, "nPos")
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| 225 | $iPos = $iPosY
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| 226 | $iTrackPos = DllStructGetData($tSCROLLINFO, "nTrackPos")
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| 227 |
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| 228 | Switch $iScrollCode
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| 229 | Case $SB_TOP ; user clicked the HOME keyboard key
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| 230 | DllStructSetData($tSCROLLINFO, "nPos", $iMin)
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| 231 |
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| 232 | Case $SB_BOTTOM ; user clicked the END keyboard key
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| 233 | DllStructSetData($tSCROLLINFO, "nPos", $iMax)
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| 234 |
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| 235 | Case $SB_LINEUP ; user clicked the top arrow
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| 236 | DllStructSetData($tSCROLLINFO, "nPos", $iPos - 1)
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| 237 |
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| 238 | Case $SB_LINEDOWN ; user clicked the bottom arrow
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| 239 | DllStructSetData($tSCROLLINFO, "nPos", $iPos + 1)
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| 240 |
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| 241 | Case $SB_PAGEUP ; user clicked the scroll bar shaft above the scroll box
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| 242 | DllStructSetData($tSCROLLINFO, "nPos", $iPos - $iPage)
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| 243 |
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| 244 | Case $SB_PAGEDOWN ; user clicked the scroll bar shaft below the scroll box
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| 245 | DllStructSetData($tSCROLLINFO, "nPos", $iPos + $iPage)
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| 246 |
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| 247 | Case $SB_THUMBTRACK ; user dragged the scroll box
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| 248 | DllStructSetData($tSCROLLINFO, "nPos", $iTrackPos)
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| 249 | EndSwitch
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| 250 |
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| 251 | ; // Set the position and then retrieve it. Due to adjustments
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| 252 | ; // by Windows it may not be the same as the value set.
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| 253 |
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| 254 | DllStructSetData($tSCROLLINFO, "fMask", $SIF_POS)
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| 255 | _GUIScrollBars_SetScrollInfo($hWnd, $SB_VERT, $tSCROLLINFO)
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| 256 | _GUIScrollBars_GetScrollInfo($hWnd, $SB_VERT, $tSCROLLINFO)
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| 257 | ;// If the position has changed, scroll the window and update it
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| 258 | $iPos = DllStructGetData($tSCROLLINFO, "nPos")
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| 259 |
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| 260 | If ($iPos <> $iPosY) Then
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| 261 | _GUIScrollBars_ScrollWindow($hWnd, 0, $iCharY * ($iPosY - $iPos))
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| 262 | $iPosY = $iPos
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| 263 | EndIf
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| 264 |
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| 265 | Return $GUI_RUNDEFMSG
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| 266 | EndFunc ;==>WM_VSCROLL
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