WinForms Aero Glass效果-Vista SP1-用户控件显示不正确吗? [英] WinForms Aero Glass effect - Vista SP1 - User controls are rendered inproperly?

问题描述

你好.我正在尝试创建一个使用Aero Glass效果的WinForms应用程序.我已经成功调用了DwmExtendFrameIntoClient，并且出现了效果.
但是，当我在玻璃区域(组合框)的顶部放置一个控件时，该文本将变为透明的.

我该如何再次使黑色文本变得不透明?

Hello.  I am attempting to create a WinForms application which uses the Aero Glass effect.  I have successfully called DwmExtendFrameIntoClient and the effect is present. 
However, when I place a control on top of the glass area (a combobox) the text is rendered transparent.  This is obviously an undesirable outcome.

How would I go about making that black text opaque again?

推荐答案

我遇到了同样的问题.不幸的是，我从来没有想过(我个人更喜欢WinForms而不是WPF，因此我很沮丧地听到这是一个持续不断的问题，如果真的可以解决，那只能通过跳很多圈来实现).基本上，我被告知要使用WPF，WPF确实可以工作.放在玻璃板上的任何东西(如文本框)都可以正确呈现.

I had this same problem.  Unfortunatly, I never figured it out (I much prefer WinForms to WPF as a personal preference, so I was bummed to hear this was a constant nagging point and if you do get it to work it's only by jumping through lots of hoops).  Basically, I was told to use WPF and WPF did work.  Anything placed on the glass like a text box rendered correctly.

http://social.msdn.microsoft.com/Forums/en-US/vbgeneral/thread/316a178e-252b-480d-8cc9-85814c2073d8

My solution ended up being to create a WPF application and then include the WinForms controls that I wanted to use.  I might also add, your code to call DwmExtendFrameIntoClient will work on WPF with a few modifications, specifically the pieces that find the window handle.

(there is some irony is that I'm answering this question while I was doing further searches for people who might have pulled this off on WinForms).  ;P

Here's some VB code that shows you how to get the window handle from the WPF form (it assumes 'win' is a WPF Window... if you're actually calling it from that class then you can use 'Me' or 'this' from c#):

                Dim hwnd As IntPtr = New System.Windows.Interop.WindowInteropHelper(win).Handle

                If hwnd = IntPtr.Zero Then
                    Throw New System.Exception("Window handle must be valid.  Try from WPF's Window Loaded() event.")
                End If

                win.Background = Brushes.Transparent
                HwndSource.FromHwnd(hwnd).CompositionTarget.BackgroundColor = Colors.Transparent

                DwmExtendFrameIntoClientArea(hwnd, margin)

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