黑色高亮条与GDI [英] Black highlight bar with GDI

问题描述

我有一些不错的拆分器代码为我的GUI，但我不能得到钢笔/刷/无论是我需要做适当的高亮。你知道如何在visual studio 10，分割条可以拖动，有一个美丽的黑色透明条，让你知道分裂会发生什么时，你抬起鼠标按钮。如下图所示： http://www.freeimgshost.com/fullsize/efmcxyyu1wbyb1r7mz0.png

I got some nice splitter code for my GUI but I can't get the pen/brush/whatever it is I need to do proper highlighting. You know how in visual studio 10, the splitter bars can be dragged and there's a beautiful black transparent bar letting you know where the split will happen when you lift up your mouse button. Here's a picture: http://www.freeimgshost.com/fullsize/efmcxyyu1wbyb1r7mz0.png

如何使用GDI和c ++实现黑色高亮条？

How can I achieve that black highlight bar using solely GDI and c++?

推荐答案

Visual Studio UI是在WPF中实现的，因此我猜测分割条只是一个半透明的填充矩形。

The Visual Studio UI is implemented in WPF, so I'd guess that the splitter bar is just a semi-transparent filled rectangle.

对透明度的支持相当差。

However, GDI has fairly poor support for transparency.

您可以使用半透明的，始终在顶部的分层窗口获得相同的效果。这是一个简单的解决方案，因为你不必担心重绘任何东西。您只需移动窗口即可。

You could get the same effect using a semi-transparent, always-on-top, layered window. This is a simple solution because you don't have to worry about repainting anything. You just move the window about.

此答案针对另一个问题有一些代码创建这样的窗口（用于不同的目的）。

This answer to another question has some code that creates such a window (for a different purpose).

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