Private 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
对,使用BitBlt函数Option Explicit Private 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 Private Sub Command1_Click() Dim lngP As Long picD.Cls lngP = BitBlt(picD.hDC, 0, 0, picS.Width, picS.Height / 2, picS.hDC, 0, 0, vbSrcCopy) End SubPrivate Sub Form_Load() Me.ScaleMode = 3 With picS .ScaleMode = 3 .AutoRedraw = True End With With picD .ScaleMode = 3 .AutoRedraw = True .Width = picS.Width .Height = picS.Height End With picS.Picture = LoadPicture("C:\1.jpg") End Sub
如何将截取后的图片保存呢?下面的代码怎么不行呢?pa = App.Path & "\00.jpg" SavePicture Picture2.Image, pa Picture2里截取后的图片
Private 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
Private Sub Command1_Click()
Dim lngP As Long
picD.Cls
lngP = BitBlt(picD.hDC, 0, 0, picS.Width, picS.Height / 2, picS.hDC, 0, 0, vbSrcCopy)
End SubPrivate Sub Form_Load()
Me.ScaleMode = 3
With picS
.ScaleMode = 3
.AutoRedraw = True
End With
With picD
.ScaleMode = 3
.AutoRedraw = True
.Width = picS.Width
.Height = picS.Height
End With
picS.Picture = LoadPicture("C:\1.jpg")
End Sub
SavePicture Picture2.Image, pa
Picture2里截取后的图片