Option Explicit
Private Declare Function GetWindowLong Lib "user32" Alias "GetWindowLongA" ( _
ByVal hwnd As Long, _
ByVal nIndex As Long) As Long
Private Declare Function SetWindowLong Lib "user32" Alias "SetWindowLongA" ( _
ByVal hwnd As Long, _
ByVal nIndex As Long, _
ByVal dwNewLong As Long) As Long
Private Declare Function SetLayeredWindowAttributes Lib "user32.dll" ( _
ByVal hwnd As Long, _
ByVal crKey As Long, _
ByVal bAlpha As Byte, _
ByVal dwFlags As Long) As Long
Private Const GWL_EXSTYLE As Long = (-20)
Private Const WS_EX_LAYERED As Long = &H80000
Private Const LWA_COLORKEY As Long = &H1
Private Sub Form_Load()
Dim rtn As Long
Frame1.BackColor = &HFF0000
rtn = GetWindowLong(hwnd, GWL_EXSTYLE)
rtn = rtn Or WS_EX_LAYERED
SetWindowLong hwnd, GWL_EXSTYLE, rtn
SetLayeredWindowAttributes hwnd, &HFF0000, 0, LWA_COLORKEY '将扣去窗口中的蓝色
End Sub
自己画一个
Public Declare Function DrawEdge Lib "user32" (ByVal hdc As Long, qrc As RECT, ByVal edge As Long, ByVal grfFlags As Long) As Long
'DrawEdge Constants
Public Const BDR_RAISEDOUTER = &H1
Public Const BDR_SUNKENOUTER = &H2
Public Const BDR_RAISEDINNER = &H4
Public Const BDR_SUNKENINNER = &H8
Public Const BDR_OUTER = &H3
Public Const BDR_INNER = &HC
Public Const BDR_RAISED = &H5
Public Const BDR_SUNKEN = &HA
Public Const EDGE_RAISED = (BDR_RAISEDOUTER Or BDR_RAISEDINNER)
Public Const EDGE_SUNKEN = (BDR_SUNKENOUTER Or BDR_SUNKENINNER)
Public Const EDGE_ETCHED = (BDR_SUNKENOUTER Or BDR_RAISEDINNER)
Public Const EDGE_BUMP = (BDR_RAISEDOUTER Or BDR_SUNKENINNER)
Public Const BF_LEFT = &H1
Public Const BF_TOP = &H2
Public Const BF_RIGHT = &H4
Public Const BF_BOTTOM = &H8
Public Const BF_TOPLEFT = (BF_TOP Or BF_LEFT)
Public Const BF_TOPRIGHT = (BF_TOP Or BF_RIGHT)
Public Const BF_BOTTOMLEFT = (BF_BOTTOM Or BF_LEFT)
Public Const BF_BOTTOMRIGHT = (BF_BOTTOM Or BF_RIGHT)
Public Const BF_RECT = (BF_LEFT Or BF_TOP Or BF_RIGHT Or BF_BOTTOM)