treeview的背景能不能设成透明
各位大哥,我想问一下,vb6.0中的treeview的背景能不能改成透明,它默认的是白色,我用api改成了红色,不过我需要改成透明，显示背景图片,不知道能不能改成透明? --------------------编程问答-------------------- 你的目的是加背景图片。参考：如何用VB实现给TreeView加上背景图片 http://topic.csdn.net/t/20060612/12/4815737.html --------------------编程问答--------------------
Private Declare Function GetWindowLong Lib "user32" Alias "GetWindowLongA" (ByVal hwnd As Long, ByVal nIndex As Long) As Long--------------------编程问答-------------------- 注意其它控件就不要用白背景了 --------------------编程问答-------------------- 最好是先用API将treeview的背景弄成别的颜色,在别的颜色下透明比如RGB(255,0,0)
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
Const WS_EX_LAYERED = &H80000
Const GWL_EXSTYLE = (-20)
Const LWA_COLORKEY = &H1
Dim rtn&
Private Sub Form_Load()
rtn = GetWindowLong(hwnd, GWL_EXSTYLE)
rtn = rtn Or WS_EX_LAYERED
SetWindowLong hwnd, GWL_EXSTYLE, rtn
SetLayeredWindowAttributes hwnd, RGB(255, 255, 255), &H2, LWA_COLORKEY
End Sub
补充：VB , 控件
