窗口滚动条真难啊-『提问交流』-AUTOIT CN

xiaoy 发表于 2011-1-18 22:46:08

窗口滚动条真难啊

一直闹不明白窗口水平或垂直滚动条是怎么实现的，好像光用样式没什么用，看了一些朋友类似的帖，发现一个也看不明白，我现在只想实现一个简单点的，如：一个固定窗口，建个图片控件，图片大于窗口客户区，如何实现滚动条？？

xiaoy 发表于 2011-1-19 09:53:51

为什么看上去很简单的事情，autoit要搞这么复杂{:face (460):}

yhxhappy 发表于 2011-1-20 22:28:39

LZ看看关于 _GUIScrollBars_Init 的帮助吧，要实现你要的效果应该不难
下面代码里的滚动条都是人为创造出来的，和窗口样式无关#AutoIt3Wrapper_au3check_parameters=-d -w 1 -w 2 -w 3 -w 4 -w 5 -w 6
#include <GUIConstantsEx.au3>
#include <WindowsConstants.au3>
#include <StructureConstants.au3>
#include <GUIScrollBars.au3>
#include <ScrollBarConstants.au3>

Opt("MustDeclareVars", 1)

_Main()

Func _Main()
Local $nFileMenu, $nExititem, $GUIMsg, $hGUI, $h_cGUI, $h_cGUI2
Local $listview, $button

$hGUI = GUICreate("ScrollBar Example", 400, 400, -1, -1, BitOR($WS_MINIMIZEBOX, $WS_CAPTION, $WS_POPUP, $WS_SYSMENU, $WS_SIZEBOX))
GUISetBkColor(0x88AABB)

$nFileMenu = GUICtrlCreateMenu("File")
$nExititem = GUICtrlCreateMenuItem("Exit", $nFileMenu)
$listview = GUICtrlCreateListView("col1|col2|col3", 10, 10, 200, 150);,$LVS_SORTDESCENDING)
$button = GUICtrlCreateButton("Value?", 75, 170, 70, 20)
GUICtrlSetResizing($button, $GUI_DOCKALL)
For $x = 1 To 30
GUICtrlCreateListViewItem("item" & $x & "|col2|col3", $listview)
Next
GUICtrlSetResizing($listview, $GUI_DOCKALL)

$h_cGUI = GUICreate("Child GUI", 200, 200, 10, 200, $WS_CHILD, $WS_EX_CLIENTEDGE, $hGUI)
GUICtrlCreateButton("a button", 10, 10, 90, 20)
GUISetBkColor(0X006400)
GUISetState()
GUICtrlSetResizing($h_cGUI, $GUI_DOCKALL)

GUISwitch($hGUI)

$h_cGUI2 = GUICreate("Child GUI", 200, 200, 215, 10, $WS_CHILD, $WS_EX_CLIENTEDGE, $hGUI)
GUICtrlCreateButton("a button", 10, 10, 90, 20)
GUISetBkColor(0X006400)
GUISetState()
GUICtrlSetResizing($h_cGUI2, $GUI_DOCKALL)

GUISwitch($hGUI)

GUIRegisterMsg($WM_SIZE, "WM_SIZE")
GUIRegisterMsg($WM_VSCROLL, "WM_VSCROLL")
GUIRegisterMsg($WM_HSCROLL, "WM_HSCROLL")

GUISetState()

_GUIScrollBars_Init($hGUI)
_GUIScrollBars_Init($h_cGUI)

While 1
$GUIMsg = GUIGetMsg()

Switch $GUIMsg
Case $GUI_EVENT_CLOSE, $nExititem
ExitLoop
EndSwitch
WEnd

Exit
EndFunc ;==>_Main

Func WM_SIZE($hWnd, $Msg, $wParam, $lParam)
#forceref $Msg, $wParam
Local $index = -1, $yChar, $xChar, $xClientMax, $xClient, $yClient, $ivMax
For $x = 0 To UBound($aSB_WindowInfo) - 1
If $aSB_WindowInfo[$x] = $hWnd Then
$index = $x
$xClientMax = $aSB_WindowInfo[$index]
$xChar = $aSB_WindowInfo[$index]
$yChar = $aSB_WindowInfo[$index]
$ivMax = $aSB_WindowInfo[$index]
ExitLoop
EndIf
Next
If $index = -1 Then Return 0

Local $tSCROLLINFO = DllStructCreate($tagSCROLLINFO)

; Retrieve the dimensions of the client area.
$xClient = BitAND($lParam, 0x0000FFFF)
$yClient = BitShift($lParam, 16)
$aSB_WindowInfo[$index] = $xClient
$aSB_WindowInfo[$index] = $yClient

; Set the vertical scrolling range and page size
DllStructSetData($tSCROLLINFO, "fMask", BitOR($SIF_RANGE, $SIF_PAGE))
DllStructSetData($tSCROLLINFO, "nMin", 0)
DllStructSetData($tSCROLLINFO, "nMax", $ivMax)
DllStructSetData($tSCROLLINFO, "nPage", $yClient / $yChar)
_GUIScrollBars_SetScrollInfo($hWnd, $SB_VERT, $tSCROLLINFO)

; Set the horizontal scrolling range and page size
DllStructSetData($tSCROLLINFO, "fMask", BitOR($SIF_RANGE, $SIF_PAGE))
DllStructSetData($tSCROLLINFO, "nMin", 0)
DllStructSetData($tSCROLLINFO, "nMax", 2 + $xClientMax / $xChar)
DllStructSetData($tSCROLLINFO, "nPage", $xClient / $xChar)
_GUIScrollBars_SetScrollInfo($hWnd, $SB_HORZ, $tSCROLLINFO)

Return $GUI_RUNDEFMSG
EndFunc ;==>WM_SIZE

Func WM_HSCROLL($hWnd, $Msg, $wParam, $lParam)
#forceref $Msg, $lParam
Local $nScrollCode = BitAND($wParam, 0x0000FFFF)

Local $index = -1, $xChar, $xPos
Local $Min, $Max, $Page, $Pos, $TrackPos

For $x = 0 To UBound($aSB_WindowInfo) - 1
If $aSB_WindowInfo[$x] = $hWnd Then
$index = $x
$xChar = $aSB_WindowInfo[$index]
ExitLoop
EndIf
Next
If $index = -1 Then Return 0

;~ ; Get all the horizontal scroll bar information
Local $tSCROLLINFO = _GUIScrollBars_GetScrollInfoEx($hWnd, $SB_HORZ)
$Min = DllStructGetData($tSCROLLINFO, "nMin")
$Max = DllStructGetData($tSCROLLINFO, "nMax")
$Page = DllStructGetData($tSCROLLINFO, "nPage")
; Save the position for comparison later on
$xPos = DllStructGetData($tSCROLLINFO, "nPos")
$Pos = $xPos
$TrackPos = DllStructGetData($tSCROLLINFO, "nTrackPos")
#forceref $Min, $Max
Switch $nScrollCode

Case $SB_LINELEFT ; user clicked left arrow
DllStructSetData($tSCROLLINFO, "nPos", $Pos - 1)

Case $SB_LINERIGHT ; user clicked right arrow
DllStructSetData($tSCROLLINFO, "nPos", $Pos + 1)

Case $SB_PAGELEFT ; user clicked the scroll bar shaft left of the scroll box
DllStructSetData($tSCROLLINFO, "nPos", $Pos - $Page)

Case $SB_PAGERIGHT ; user clicked the scroll bar shaft right of the scroll box
DllStructSetData($tSCROLLINFO, "nPos", $Pos + $Page)

Case $SB_THUMBTRACK ; user dragged the scroll box
DllStructSetData($tSCROLLINFO, "nPos", $TrackPos)
EndSwitch

;~ // Set the position and then retrieve it.Due to adjustments
;~ // by Windows it may not be the same as the value set.

DllStructSetData($tSCROLLINFO, "fMask", $SIF_POS)
_GUIScrollBars_SetScrollInfo($hWnd, $SB_HORZ, $tSCROLLINFO)
_GUIScrollBars_GetScrollInfo($hWnd, $SB_HORZ, $tSCROLLINFO)
;// If the position has changed, scroll the window and update it
$Pos = DllStructGetData($tSCROLLINFO, "nPos")
If ($Pos <> $xPos) Then _GUIScrollBars_ScrollWindow($hWnd, $xChar * ($xPos - $Pos), 0)
Return $GUI_RUNDEFMSG
EndFunc ;==>WM_HSCROLL

Func WM_VSCROLL($hWnd, $Msg, $wParam, $lParam)
#forceref $Msg, $wParam, $lParam
Local $nScrollCode = BitAND($wParam, 0x0000FFFF)
Local $index = -1, $yChar, $yPos
Local $Min, $Max, $Page, $Pos, $TrackPos

For $x = 0 To UBound($aSB_WindowInfo) - 1
If $aSB_WindowInfo[$x] = $hWnd Then
$index = $x
$yChar = $aSB_WindowInfo[$index]
ExitLoop
EndIf
Next
If $index = -1 Then Return 0

; Get all the vertial scroll bar information
Local $tSCROLLINFO = _GUIScrollBars_GetScrollInfoEx($hWnd, $SB_VERT)
$Min = DllStructGetData($tSCROLLINFO, "nMin")
$Max = DllStructGetData($tSCROLLINFO, "nMax")
$Page = DllStructGetData($tSCROLLINFO, "nPage")
; Save the position for comparison later on
$yPos = DllStructGetData($tSCROLLINFO, "nPos")
$Pos = $yPos
$TrackPos = DllStructGetData($tSCROLLINFO, "nTrackPos")

Switch $nScrollCode
Case $SB_TOP ; user clicked the HOME keyboard key
DllStructSetData($tSCROLLINFO, "nPos", $Min)

Case $SB_BOTTOM ; user clicked the END keyboard key
DllStructSetData($tSCROLLINFO, "nPos", $Max)

Case $SB_LINEUP ; user clicked the top arrow
DllStructSetData($tSCROLLINFO, "nPos", $Pos - 1)

Case $SB_LINEDOWN ; user clicked the bottom arrow
DllStructSetData($tSCROLLINFO, "nPos", $Pos + 1)

Case $SB_PAGEUP ; user clicked the scroll bar shaft above the scroll box
DllStructSetData($tSCROLLINFO, "nPos", $Pos - $Page)

Case $SB_PAGEDOWN ; user clicked the scroll bar shaft below the scroll box
DllStructSetData($tSCROLLINFO, "nPos", $Pos + $Page)

Case $SB_THUMBTRACK ; user dragged the scroll box
DllStructSetData($tSCROLLINFO, "nPos", $TrackPos)
EndSwitch

;~ // Set the position and then retrieve it.Due to adjustments
;~ // by Windows it may not be the same as the value set.

DllStructSetData($tSCROLLINFO, "fMask", $SIF_POS)
_GUIScrollBars_SetScrollInfo($hWnd, $SB_VERT, $tSCROLLINFO)
_GUIScrollBars_GetScrollInfo($hWnd, $SB_VERT, $tSCROLLINFO)
;// If the position has changed, scroll the window and update it
$Pos = DllStructGetData($tSCROLLINFO, "nPos")

If ($Pos <> $yPos) Then
_GUIScrollBars_ScrollWindow($hWnd, 0, $yChar * ($yPos - $Pos))
$yPos = $Pos
EndIf

Return $GUI_RUNDEFMSG

EndFunc ;==>WM_VSCROLL

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AUTOIT CN's Archiver

窗口滚动条真难啊