UPDATE I completely rephrased the question
I want to create a window with round corners, that's also semi-transparent.
I managed to make a frame semi-transparent by calling the SetTransparent( alpha ) method, however, I still don't know how to make the window have no background.
I tried to get the device context (dc) of the window and set the background brush to wx.TRANSPARENT_BRUSH but that doesn't seem to have any effect.
I'm seeking a kind of effect similar to this for instance, but I want to do it without using a bitmap (i.e. without any external media file).
How do I set the background to nothing?
Update:
it seems what I want is called "shaped window". I'm looking a bit further into that, but still the question is: how can I make one without using any external media file (i.e. purely in code).
It's surprising that no one gave an answer ..
Yes, as FogleBird said, it's done with SetShape, but the question is how to get a shape for a ronded rectangle without using an image file.
I found one way to do that, which is to create an empty bitmap and draw on it a rounded rectangle using a memory dc
def GetRoundBitmap( w, h, radius ):
maskColor = wx.Color(0,0,0)
shownColor = wx.Color(5,5,5)
b = wx.EmptyBitmap(w,h)
dc = wx.MemoryDC()
dc.SelectObject(b)
dc.SetBrush(wx.Brush(maskColor))
dc.DrawRectangle(0,0,w,h)
dc.SetBrush(wx.Brush(shownColor))
dc.DrawRoundedRectangle(0,0,w,h,radius)
dc.SelectObject(wx.NullBitmap)
b.SetMaskColour(maskColor)
return b
def GetRoundShape( w, h, r ):
return wx.RegionFromBitmap( GetRoundBitmap(w,h,r) )
One problem I found is that the shape is quiet aliased. Not exactly a nice/fancy window, but better than nothing.
You want the SetShape method.
http://docs.wxwidgets.org/stable/wx_wxtoplevelwindow.html#wxtoplevelwindowsetshape
Check out wxWidgets\samples\shaped (in wxWidget), it shows a start shaped window.
