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[英]Excel VBA. Matching the BackColor of a TextBox to the .Interior.Color of a cell
[英]Random colour changing with cell Interior.Color
我拼湊了一些簡單的東西,看看會發生什么,當然我打破了excel。
Sub colourChange()
Dim r As Byte, g As Byte, b As Byte
On Error Resume Next
For l = 0 To 50
For j = 1 To 22
For k = 1 To 66
r = WorksheetFunction.RandBetween(0, 255)
g = WorksheetFunction.RandBetween(0, 255)
b = WorksheetFunction.RandBetween(0, 255)
Cells(j, k).Interior.Color = RGB(r, g, b)
Next k
Next j
Application.Wait Now + #12:00:03 AM#
Next l
End Sub
它開始很好,然后生物減速到虛擬靜止,最終甚至產生太多不同的單元格格式錯誤。
有什么方法可以加快速度並阻止錯誤嗎? 我查了一下,excel應該支持4000種不同的格式,我不應該打到一半! 它是否記得以前的那些什么? 這里發生了什么?
我認為不需要l = 0到50。 而Application.ScreenUpdating = False設置有助於更快地練習。 我猜Excel的內部顏色總數有限制。
Sub colourChange()
Dim r As Byte, g As Byte, b As Byte
Dim vR(), n As Integer
'Cells.Clear
n = 3000
ReDim vR(1 To n)
For i = 1 To n
r = WorksheetFunction.RandBetween(0, 255)
g = WorksheetFunction.RandBetween(0, 255)
b = WorksheetFunction.RandBetween(0, 255)
vR(i) = RGB(r, g, b)
Next i
Application.ScreenUpdating = False
For j = 1 To 500
For k = 1 To 100
Cells(j, k).Interior.Color = vR(WorksheetFunction.RandBetween(1, n))
Next k
Next j
Application.ScreenUpdating = True
End Sub
其他方法,首先練習子getColor()(僅第一次),然后練習colourchang()。
Public vR()
Public n As Integer
Sub getColor()
Dim r As Byte, g As Byte, b As Byte
Dim i As Integer
'Cells.Clear
n = 3000
ReDim vR(1 To n)
For i = 1 To n
r = WorksheetFunction.RandBetween(0, 255)
g = WorksheetFunction.RandBetween(0, 255)
b = WorksheetFunction.RandBetween(0, 255)
vR(i) = RGB(r, g, b)
Next i
End Sub
Sub colourChange()
Dim j As Integer, k As Integer, m As Integer
Application.ScreenUpdating = False
For j = 1 To 500
For k = 1 To 100
m = WorksheetFunction.RandBetween(1, n)
Cells(j, k).Interior.Color = vR(m)
Next k
Next j
Application.ScreenUpdating = True
End Sub
這對我來說很有用。 請注意您正在使用Wait
功能,這會導致每個“幀”延遲3秒:)加快速度的方法是將延遲從3秒減少到1秒:)
但隨后顏色不會發生這么大變化,因為隨機數發生器是基於系統時間的,如果減少延遲,它的變化會更小。
您也可以使用函數Rnd()
並將其乘以256而不是使用工作表函數。 但我不確定,它會顯着影響執行的持續時間。
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