Sub calcDC()
FillRect mDC, R, GetSysColorBrush(COLOR_WINDOW)
Dim str As String
Dim i As Long, j As Long
For i = 0 To 5
For j = 0 To 5
'arr(i, j) = Rnd * 4
str = arr(i, j)
If str <> "0" Then
Call TextOut(mDC, 67 * i + 20, 67 * j, str, LenB(str) - 1)
End If
Next j
Next i
End Sub模块：Public arr(6, 6) As Integer
Public mDC As Long, mBitmap As Long
Public R As RECT
Public drops As Long
Public stack_h As Long
Public stack(10) As POINT
Public Declare Function GetDC Lib "user32" (ByVal hwnd As Long) As Long
Public Declare Function TextOut Lib "gdi32" Alias "TextOutA" (ByVal hdc As Long, ByVal x As Long, ByVal y As Long, ByVal lpString As String, ByVal nCount 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 ReleaseDC Lib "user32" (ByVal hwnd As Long, ByVal hdc As Long) As Long
Public Declare Function SetBkMode Lib "gdi32" (ByVal hdc As Long, ByVal nBkMode As Long) As Long
Public Declare Function CreateFont Lib "gdi32" Alias "CreateFontA" (ByVal nHeight As Long, ByVal nWidth As Long, ByVal nEscapement As Long, ByVal nOrientation As Long, ByVal fnWeight As Long, ByVal fdwItalic As Boolean, ByVal fdwUnderline As Boolean, ByVal fdwStrikeOut As Boolean, ByVal fdwCharSet As Long, ByVal fdwOutputPrecision As Long, ByVal fdwClipPrecision As Long, ByVal fdwQuality As Long, ByVal fdwPitchAndFamily As Long, ByVal lpszFace As String) As Long
Public Declare Function GetDeviceCaps Lib "gdi32" (ByVal hdc As Long, ByVal nIndex As Long) As Long
Public Declare Function DeleteObject Lib "gdi32" (ByVal hObject As Long) As Long
Public Declare Function SelectObject Lib "gdi32" (ByVal hdc As Long, ByVal hObject As Long) As Long
Public Declare Function MulDiv Lib "kernel32" (ByVal nNumber As Long, ByVal nNumerator As Long, ByVal nDenominator As Long) As Long
Public Declare Function BitBlt Lib "gdi32" (ByVal hDestDC As Long, ByVal x As Long, ByVal y As Long, ByVal nWidth As Long, ByVal nHeight As Long, ByVal hSrcDC As Long, ByVal xSrc As Long, ByVal ySrc As Long, ByVal dwRop As Long) As Long
Public Declare Function CreateCompatibleDC Lib "gdi32" (ByVal hdc As Long) As Long
Public Declare Function CreateCompatibleBitmap Lib "gdi32" (ByVal hdc As Long, ByVal nWidth As Long, ByVal nHeight As Long) As Long
Public Declare Function FillRect Lib "user32" (ByVal hdc As Long, lpRect As RECT, ByVal hBrush 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 GetSysColorBrush Lib "user32" (ByVal nIndex As Long) As Long
Public Declare Function DeleteDC Lib "gdi32" (ByVal hdc As Long) As Long
Public Type RECT
Left As Long
Top As Long
Right As Long
Bottom As Long
End Type
Public Type POINT
x As Long
y As Long
End Type
Public Const TRANSPARENT = 1
Public Const OPAQUE = 2
Public Const COLOR_WINDOW = 5
Public Const vbSrcCopy = &HCC0020
关键在于你是用Me.Refresh来刷新窗口，包括窗体上的所有控件都会被刷新，当然也包括背景啦。
所以会闪烁。
你可以不要用line 控件，直接用代码画在mDc上，然后需要刷新的时候直接用
BitBlt me.hdc,0,0,width,height,mDC,0,0,SrcCopy