Me.Top = 0
Me.Left = 0
Me.Width = Screen.Width
Me.Height = Screen.Height
Picture1.Width = Screen.Width + 30
Picture1.Height = Screen.Height + 30
BitBlt Picture1.hDC, 0, 0, Screen.Width + 30, Screen.Height + 30, GetDC(0), 0, 0, vbSrcCopy
Set Form1.Picture = Picture1.Image上面这个截屏后怎么把Picture1.Image转成黑白图像放进Form1.Picture
也就是实现XP点关闭计算机后出现的效果
google一下还是有的
Left As Long
Top As Long
Right As Long
Bottom As Long
End TypePrivate Declare Function GetDC Lib "user32" (ByVal hwnd As Long) As Long
Private Declare Function ReleaseDC Lib "user32" (ByVal hwnd As Long, ByVal hdc As Long) As Long
Private Declare Function CreatePatternBrush Lib "gdi32" (ByVal hBitmap As Long) As Long
Private Declare Function PatBlt Lib "gdi32" (ByVal hdc As Long, ByVal x As Long, ByVal y As Long, ByVal nWidth As Long, ByVal nHeight As Long, ByVal dwRop As Long) As Long
Private Declare Function DeleteObject Lib "gdi32" (ByVal hObject As Long) As Long
Private Declare Function CreateBitmap Lib "gdi32" (ByVal nWidth As Long, ByVal nHeight As Long, ByVal nPlanes As Long, ByVal nBitCount As Long, lpBits As Any) As Long
Private Declare Function SelectObject Lib "gdi32" (ByVal hdc As Long, ByVal hObject As Long) As Long
Private Declare Function InvalidateRect Lib "user32" (ByVal hwnd As Long, ByVal lpRect As Long, ByVal bErase As Long) As LongPrivate bybits(1 To 16) As Byte
Private hBitmap As Long, hBrush As Long
Private hDesktopWnd As Long
'注释:将图变暗,如同待关机一般
Private Sub Command1_Click()
Dim rop As Long, res As Long
Dim hdc5 As Long, width5 As Long, height5 As Long
'注释: 如果只要让Picture1有效果将底下三行unMark取代 hdc5, width5, height5三个值
'注释: hdc5 = Picture1.hdc
'注释: width5 = Picture1.ScaleWidth
'注释: height5 = Picture1.ScaleHeight
'
'注释: 底下三行设定整个萤幕都暗下来
hdc5 = GetDC(0)
width5 = Screen.Width \ Screen.TwipsPerPixelX
height5 = Screen.Height \ Screen.TwipsPerPixelYrop = &HA000C9 ' 注释:与原图做and运算
Call SelectObject(hdc5, hBrush)
res = PatBlt(hdc5, 0, 0, width5, height5, rop)
Call DeleteObject(hBrush)
'注释: 如果只暗picture1则底下这一行要起来
res = ReleaseDC(0, hdc5)
End Sub
'注释: 回复原本的画面
Private Sub Command2_Click()
Dim aa As Long
'注释: 如果只暗picture1则底下这一行要unMark起来
'注释: Picture1.Refresh
'
'注释: 如果只暗picture1则底下这一行要起来
aa = InvalidateRect(0, 0, 1)
End SubPrivate Sub Form_Load()
Dim ary
Dim i As Long
ary = Array(&H55, &H0, &HAA, &H0, _
&H55, &H0, &HAA, &H0, _
&H55, &H0, &HAA, &H0, _
&H55, &H0, &HAA, &H0)
For i = 1 To 16
bybits(i) = ary(i - 1)
Next i
hBitmap = CreateBitmap(8, 8, 1, 1, bybits(1))
hBrush = CreatePatternBrush(hBitmap)
Picture1.ForeColor = RGB(0, 0, 0)
Picture1.BackColor = RGB(255, 255, 255)
Picture1.ScaleMode = 3
End Sub