雪佛龙按钮在delphi对话框中 [英] Chevron button in delphi dialog form

问题描述

我想画一个雪佛龙按钮

在一个自定义对话窗体中，我想知道是否存在一个状态和部分常量与

感谢 Andreas （像往常一样的主题和客户图纸相关的问题）

另请参阅他的实用程序 Windows视觉主题：零件和状态库

理想情况下我会使用第二个版本，如果可用，但回到XP的第一个。

I want to draw a Chevron button

in a custom dialog form and I'm wondering if exist a State and Part constant to be used with the DrawThemeBackground function or I must draw this kind of button manually?

解决方案

The closest I can find for XP is

ThemeServices.DrawElement(Canvas.Handle, GetElementDetails(tebNormalGroupExpandNormal), Rect(10, 100, 100, 200));

or

EBP_NORMALGROUPEXPAND using DrawThemeBackground directly. However this draws a double arrow (on XP at least)

However later windows versions also have TDLG_EXPANDOBUTTON, which is what you want judging by the image at Where do I find the icons / animations recommended in the Windows 7 UX guide?

Thanks to Andreas (as usual for theme and customer drawing related questions)

See also his utility at Windows Visual Themes: Gallery of Parts and States?

Ideally I would use the second version if available, but fall back to the first on XP.

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