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本帖最后由 loze2000 于 2012-8-30 20:02 编辑
代码借鉴了stanleypan在模仿XColor 功能的加载宏里面的源代码。
优点:
1,直接计算选中单元格(或区域)的屏幕坐标值
2,直接计算拟画高亮边框矩形值。
3,直接在Windows系统桌面DeskTop的DC上作图,它使用的就是屏幕坐标值。
4,完美解决了冻结,拆分和隐藏单元格的影响。
对stanleypan不足的改进:
1,stanleypan使用了一个比较本色的办法,采用API函数GetCursor获取当前鼠标位置(屏幕像素坐标),左右移动,判断该移动的点下面是不是当前选中的Cell,以此来获得选中单元格的边界。
可悲的是,键盘移动就会混乱。
2,后面的版本(stanleypan封装成了dll,所以看不见源码),stanleypan应该使用了获取输入光标(不是鼠标)屏幕像素坐标的办法,使用的是API函数GetCaretPos。这解决了键盘移动选中单位各的问题。
不足:使用了Pane.PointsToScreenPixelX函数,这个函数只有Excel2007版本以后版本才支持!
多说两句:
1,Excel的里面Window对象PointsToScreenPixelX函数非常失败,至今没弄明白它内部是怎么个原理。此前介绍说
Window.PointsToScreenPixelX(X)= Window.PointsToScreenPixelX(0)+X 。得出的结果为屏幕坐标。其中输入的坐标应该是屏幕像素值。
但是,可悲的是在拆分和冻结下。在不同的Pane里面执行。结果让人混乱了。至今没理顺其关系。
2,Excel2007里面,给Pane添加了同样的函数PointsToScreenPixelX,可喜的是,这才是我们需要的函数。其X值就是Excel系统所使用的Point坐标系统值。输出的就是系统的屏幕坐标Pixel值。
上代码:
- Option Explicit
- '定义数据结构
- Public Type POINTAPI '用于API里面的点
- x As Long
- y As Long
- End Type
- Public Type RECT
- Left As Long
- Top As Long
- Right As Long
- Bottom As Long
- End Type
- Public Type CustCOLORS
- crSelBack As Long
- crSelBorder As Long
- End Type
- '自定义变量
- Public Colors As CustCOLORS '用clxXColor来操作它,真系不爽,待修改之
- Public Const HWND_DESKTOP = 0 '在获取桌面句柄的参数
- Public Const LOGPIXELSX = 88 '调用X方向上的系数
- Public Const LOGPIXELSY = 90 '调用Y方向上的系数
- '系统需要的变量
- 'Public Const OCR_NORMAL = 32512
- Public Const WHITE_BRUSH = 0
- Public Const LTGRAY_BRUSH = 1
- Public Const GRAY_BRUSH = 2
- Public Const DKGRAY_BRUSH = 3
- Public Const BLACK_BRUSH = 4
- Public Const NULL_BRUSH = 5
- Public Const HOLLOW_BRUSH = NULL_BRUSH
- Public Const WHITE_PEN = 6
- Public Const BLACK_PEN = 7
- Public Const NULL_PEN = 8
- Public Const OEM_FIXED_FONT = 10
- Public Const ANSI_FIXED_FONT = 11
- Public Const ANSI_VAR_FONT = 12
- Public Const SYSTEM_FONT = 13
- Public Const DEVICE_DEFAULT_FONT = 14
- Public Const DEFAULT_PALETTE = 15
- Public Const SYSTEM_FIXED_FONT = 16
- Public Const STOCK_LAST = 16
- 'SetROP2函数所用常量
- '------'绘图模式常数表--------- 常数 DrawMode 像素值
- Public Const R2_BLACK = 1 ' 'R2_BLACK vbBlackness 黑色
- Public Const R2_NOTMERGEPEN = 2 ' 'R2_NOTMERGEPEN vbNotMergePen R2_MERGEPEN的反色
- Public Const R2_MASKNOTPEN = 3 ' 'R2_MASKNOTPEN vbMaskNotPen 画笔颜色的反色与显示颜色进行AND运算
- Public Const R2_NOTCOPYPEN = 4 ' 'R2_NOTCOPYPEN vbNotCopyPen R2_COPYPEN的反色
- Public Const R2_MASKPENNOT = 5 ' 'R2_MASKPENNOT vbMaskPenNot 显示颜色的反色与画笔颜色进行AND运算
- Public Const R2_NOT = 6 ' 'R2_NOT vbInvert 当前显示颜色的反色
- Public Const R2_XORPEN = 7 ' 'R2_XORPEN vbXorPen 显示颜色与画笔颜色进行异或运算
- Public Const R2_NOTMASKPEN = 8 ' 'R2_NOTMASKPEN vbNotMaskPen R2_MASKPEN的反色
- Public Const R2_MASKPEN = 9 ' 'R2_MASKPEN vbMaskPen 显示颜色与画笔颜色进行AND运算
- Public Const R2_NOTXORPEN = 10 ' 'R2_NOTXORPEN vbNotXorPen R2_XORPEN的反色
- Public Const R2_NOP = 11 ' 'R2_NOP vbNop 不变
- Public Const R2_MERGENOTPEN = 12 'R2_MERGENOTPEN vbMergeNotPen 画笔颜色的反色与显示颜色进行OR运算
- Public Const R2_COPYPEN = 13 ' 'R2_COPYPEN vbCopyPen 画笔颜色
- Public Const R2_MERGEPENNOT = 14 'R2_MERGEPENNOT vbMergePenNot 显示颜色的反色与画笔颜色进行OR运算
- Public Const R2_MERGEPEN = 15 ' 'R2_MERGEPEN vbMergePen 画笔颜色与显示颜色进行OR运算
- Public Const R2_WHITE = 16 ' 'R2_WHITE vbWhitness 白色
- Public Const R2_LAST = 16 '
- 'GetSystemMetrics要用到的,获取窗口的边框大小,X表示横轴方向,Y表示纵轴方向
- Public Const SM_CXBORDER As Long = 5
- Public Const SM_CYBORDER As Long = 6
- Public Const SM_CXDLGFRAME As Long = 7
- Public Const SM_CYDLGFRAME As Long = 8
- Public Declare Function GetSystemMetrics Lib "user32.dll" (ByVal nIndex As Long) As Long
- Public Declare Function FindWindow Lib "user32" Alias "FindWindowA" (ByVal lpClassName As String, ByVal lpWindowName As String) As Long
- 'Public Declare Function GetCursorPos Lib "user32" (lpPoint As POINTAPI) As Long
- 'Public Declare Function WindowFromPoint Lib "user32" (ByVal xPoint As Long, ByVal yPoint As Long) As Long
- Public Declare Function GetDC Lib "user32" (ByVal hwnd As Long) As Long
- Public Declare Function SendMessage Lib "user32" Alias "SendMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, lParam As Any) As Long
- Public Declare Function GetCursor Lib "user32" () As Long
- Public Declare Function DrawEdge Lib "user32" (ByVal hdc As Long, qrc As RECT, ByVal edge As Long, ByVal grfFlags As Long) As Long
- Public Declare Function CreatePen Lib "gdi32" (ByVal nPenStyle&, ByVal nWidth&, ByVal crColor&) As Long
- Public Declare Function SetBkMode Lib "gdi32.dll" (ByVal hdc As Long, ByVal nBkMode As Long) As Long
- Public Declare Function ReleaseDC Lib "user32.dll" (ByVal hwnd As Long, ByVal hdc As Long) As Long
- Public Declare Function DeleteObject Lib "gdi32.dll" (ByVal hObject As Long) As Long
- Public Declare Function OleTranslateColor Lib "oleaut32.dll" (ByVal lOleColor As Long, ByVal lHPalette As Long, ByRef lColorRef As Long) As Long
- Public Declare Function FrameRect Lib "user32.dll" (ByVal hdc As Long, ByRef lpRect As RECT, ByVal hBrush As Long) As Long
- Public Declare Function ScreenToClient Lib "user32" (ByVal hwnd As Long, lpPoint As POINTAPI) As Long
- Public Declare Function GetDeviceCaps Lib "gdi32" (ByVal hdc As Long, ByVal nIndex As Long) As Long
- Public Declare Function Rectangle Lib "gdi32" (ByVal hdc&, ByVal x1&, ByVal y1&, ByVal x2&, ByVal y2&) As Long
- Public Declare Function GetDesktopWindow Lib "user32" () As Long
- Public Declare Function GetWindowDC Lib "user32.dll" (ByVal hwnd As Long) As Long
- Public Declare Function SaveDC Lib "gdi32" (ByVal hdc As Long) As Long
- Public Declare Function RestoreDC Lib "gdi32" (ByVal hdc As Long, ByVal nSavedDC As Long) As Long
- Public Declare Function SelectObject Lib "gdi32" (ByVal hdc As Long, ByVal hObject As Long) As Long
- Public Declare Function CreateSolidBrush Lib "gdi32.dll" (ByVal crColor As Long) As Long
- Public Declare Function RedrawWindow Lib "user32" (ByVal hwnd As Long, lprcUpdate As RECT, ByVal hrgnUpdate As Long, ByVal fuRedraw As Long) As Long
- Public Declare Function SetROP2 Lib "gdi32" (ByVal hdc As Long, ByVal nDrawMode As Long) As Long
- Public Declare Function UpdateWindow Lib "user32" (ByVal hwnd As Long) As Long
- Public Declare Function SetRect Lib "user32" (lpRect As RECT, ByVal x1 As Long, ByVal y1 As Long, ByVal x2 As Long, ByVal y2 As Long) As Long
- Public Declare Function OffsetRect Lib "user32.dll" (ByRef lpRect As RECT, ByVal x As Long, ByVal y As Long) As Long
- Public Declare Function GetCapture Lib "user32" () As Long
- Public Declare Function ClientToScreen Lib "user32" (ByVal hwnd As Long, lpPoint As POINTAPI) As Long
- Public Declare Function GetWindowRect Lib "user32.dll" (ByVal hwnd As Long, ByRef lpRect As RECT) As Long
- Public Declare Function GetCaretPos Lib "user32" (lpPoint As POINTAPI) As Long
- Public Declare Function FindWindowEx Lib "user32" Alias "FindWindowExA" (ByVal hwndParent As Long, ByVal hwndChildAfter As Long, ByVal lpszClass As String, ByVal lpszWindow As String) As Long
- Public Declare Function SetForegroundWindow Lib "user32" (ByVal hwnd As Long) As Long
- Public Declare Function GetClientRect Lib "user32" (ByVal hwnd As Long, lpRect As RECT) As Long
-
- Public gButtonDown As Boolean '菜单上高亮是否有效。用来做切换开关,用菜单切换。以便需要时显示
-
- Public Sub Do_SheetSelectionChange(ByVal Sh As Object, ByVal Target As Range)
- '整理下思路
- '难度在于,Excel中所有的长度、宽度单位都是以Point为单位。Point是真是长度单位,和Inch,Twip一样。1Point=1inch/72
- '而系统函数(API)的的单位是使用Pixel(屏幕坐标),这是和长度不直接发生关系的。它需要根据系统的对照表来查询,从而得知其与Point等的对应关系。
- '因此,我们想要获得当前活动单元格的边界范围,然后转化成系统的屏幕坐标。调用API函数完成画图。
- '在画图时,DC的选择非常重要,为了简单,直接用"桌面DeskTop"的DC,这样,转化成的屏幕坐标直接可以用。
- '这里特别注意,为什么不选择其他窗口的DC呢,因为其中设计到要将屏幕坐标转换到该窗口中去。由于列标题和行标题的存在,这似乎比较困难。
- '变量定义区
- Dim ActWinRect As RECT '当前主窗口矩形
- Dim VScrBarRect As RECT '定义垂直滚动条(ScrollBar)的矩形
- Dim HScrBarRect As RECT '定义水平滚动条ScrollBar的矩形框
- Dim actCellFrame As RECT '当前单元格的边界,上下左右,最远端
- Dim hdc As Long '设备句柄变量
- Dim hWndWin As Long '定义Excel的主程序,工作区(XLDesk),当前活动表的窗口句柄
- Dim hWndHScrBar, hWndVScrBar As Long '主窗口下面Scrollbar的句柄
- Dim HwdDesktop As Long '系统桌面的句柄
- Dim PointsPerPixelX, PointsPerPixelY As Single '点坐标转换成屏幕坐标的转换比率,X是横向,Y是纵向
- Dim brush As Long '刷子
- 'Dim color As clsColor '颜色
- Dim HighLightRect As RECT '画框矩形
- Dim winSysBoderWidth, winSysBoderHeight As Long '窗口边框大小
-
-
- On Error Resume Next
- If Not ModHighLight.gButtonDown Then Exit Sub '菜单上没有选中"高亮显示",则退出
- If Target.Areas.Count > 1 Then Exit Sub '如果是多个区域,则退出
-
-
- 'Set color = New clsColor
- 'color.WindowStyle = vbGreenStyle ' vbXPStyle
-
- '获取点(Point)坐标转换成屏幕像素(Pixl)坐标时的转换比率,因为要用到直接画图,所以这个是必须的
- '注意:Point是绝对长度单位(=1/72Inch)。Excel中用的就是Point坐标
- PointsPerPixelX = (100 / ActiveWindow.Zoom) / (GetDeviceCaps(GetWindowDC(HWND_DESKTOP), LOGPIXELSX) / 72) 'X方向-每屏幕像素(Pixel)对应多少点(Point)
- PointsPerPixelY = (100 / ActiveWindow.Zoom) / (GetDeviceCaps(GetWindowDC(HWND_DESKTOP), LOGPIXELSY) / 72) 'Y方向-每屏幕像素(Pixel)对应多少点(Point)
-
- '获得鼠标所在的窗口句柄,重重查找,从XLMAIN 到XLDESK,再到EXCEL7
- hWndWin = FindWindow("XLMAIN", Application.Caption) 'Excel主程序窗口句柄
- hWndWin = FindWindowEx(hWndWin, 0&, "XLDESK", vbNullString) 'Excel工作区(XLDESK)窗口句柄
- hWndWin = FindWindowEx(hWndWin, 0&, "EXCEL7", vbNullString) 'Excel 主窗体句柄,主要是指当前ActiveSheet的窗口
- '还需要获得两个ScrollBar的句柄,其类名都是“NUIScrollbar”,标题各位“垂直”和“水平"
-
- hWndHScrBar = FindWindowEx(hWndWin, 0&, "NUIScrollbar", "水平") '水平滚动条的句柄
- hWndVScrBar = FindWindowEx(hWndWin, 0&, "NUIScrollbar", "垂直") '垂直滚动条的句柄
-
- '当前单元格的边界(在屏幕Pixl坐标下)
- actCellFrame.Left = CLng(ActiveWindow.PointsToScreenPixelsX(Target.Left / PointsPerPixelX))
- actCellFrame.Top = CLng(ActiveWindow.PointsToScreenPixelsY(Target.Top / PointsPerPixelY))
- actCellFrame.Right = actCellFrame.Left + CLng(Target.Width / PointsPerPixelX)
- actCellFrame.Bottom = actCellFrame.Top + CLng(Target.Height / PointsPerPixelY)
- '当前单元格的边界(在屏幕Pixl坐标下)
- actCellFrame.Left = CLng(ActiveWindow.ActivePane.PointsToScreenPixelsX(Target.Left))
- actCellFrame.Top = CLng(ActiveWindow.ActivePane.PointsToScreenPixelsY(Target.Top))
- actCellFrame.Right = actCellFrame.Left + CLng(Target.Width / PointsPerPixelX)
- actCellFrame.Bottom = actCellFrame.Top + CLng(Target.Height / PointsPerPixelY)
-
- winSysBoderWidth = GetSystemMetrics(SM_CXDLGFRAME) '获得系统窗口X方向边框大小
- winSysBoderHeight = GetSystemMetrics(SM_CYDLGFRAME) '获得系统窗口Y方向边框大小
- GetWindowRect hWndWin, ActWinRect '窗口矩形空间,在屏幕坐标下
- GetWindowRect hWndHScrBar, HScrBarRect '获得水平滚动条的矩形
- GetWindowRect hWndVScrBar, VScrBarRect '获得垂直滚动条的矩形
-
- '计算拟画列矩形的边框(在屏幕Pixel坐标下),Column
- HighLightRect.Left = actCellFrame.Left
- HighLightRect.Top = ActWinRect.Top + winSysBoderHeight
- HighLightRect.Right = actCellFrame.Right
- HighLightRect.Bottom = ActWinRect.Bottom - (HScrBarRect.Bottom - HScrBarRect.Top) - 2 * winSysBoderHeight
-
- Application.ScreenUpdating = True '暂停更新,非常重要
- If hdc = 0 Then hdc = GetWindowDC(HWND_DESKTOP) '获得Windows桌面绘图设备的句柄,因为我想所有坐标都在它之下,就不需要转换了。
-
- brush = CreateSolidBrush(RGB(193, 210, 238)) '创建蓝色画刷 (&HFF0000)
- Call SelectObject(hdc, brush) '在DC中选中刷子
- SetROP2 hdc, R2_NOTXORPEN '异或(Xor)作图模式。不影响其他颜色对其的画图。
- Call SaveDC(hdc) '保存画笔和刷子
- Call SelectObject(hdc, brush) '设备空刷子
-
- Rectangle hdc, HighLightRect.Left, HighLightRect.Top, HighLightRect.Right, HighLightRect.Bottom '画列方向矩形
-
-
- '计算拟画行矩形的边框(在屏幕Pixel坐标下),Row
- HighLightRect.Left = ActWinRect.Left + winSysBoderWidth
- HighLightRect.Top = actCellFrame.Top
- HighLightRect.Right = ActWinRect.Right - (VScrBarRect.Right - VScrBarRect.Left) - 2 * winSysBoderWidth
- HighLightRect.Bottom = actCellFrame.Bottom
-
- Rectangle hdc, HighLightRect.Left, HighLightRect.Top, HighLightRect.Right, HighLightRect.Bottom '画行方向矩形
- Call RestoreDC(hdc, -1) '-1是恢复以前的内容'恢复DC设备,即回复SaveDC保存的DC
- ReleaseDC hWndWin, hdc '删除窗口设备句柄,释放资源
- DeleteObject brush '删除画笔对象
- ReleaseDC hWndWin, hdc '释放句柄
-
- End Sub
复制代码 下一步努力的目标就是:弃用Pane.PointsToScreenPixelX。使其适用与2003
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