我可以想到的唯一可能影响它的是以下(从VBForums开始,我用来使青色元素透明,就像你在图像中看到的那样,但是这对vbYellow没有任何影响.

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" ( _
            ByVal hwnd As Long,_
            ByVal crKey As Long,_
            ByVal bAlpha As Byte,_
            ByVal dwFlags As Long) As Long

Private Const GWL_STYLE = (-16)
Private Const GWL_EXSTYLE = (-20)
Private Const WS_EX_LAYERED = &H80000
Private Const LWA_COLORKEY = &H1
Private Const LWA_ALPHA = &H2

Private Sub Form_Load()
Me.BackColor = vbCyan
SetWindowLong Me.hwnd,GWL_EXSTYLE,GetWindowLong(Me.hwnd,GWL_EXSTYLE) Or WS_EX_LAYERED
SetLayeredWindowAttributes Me.hwnd,vbCyan,0&,LWA_COLORKEY
End Sub

我试图用相同颜色的图像替换vbYellow形状.这也有点击功能,但最终会得到相同的结果,甚至不会触发任何设置的点击功能.