如何绘制自定义边框

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文章信息

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文章

翻译:

翻译自: Drawing custom borders around a Symbian control

由 hoolee

最后由 hamishwillee 在 16 Aug 2012 编辑

概述

这段代码演示了如何在一个GUI组件上绘制自定义边框。此代码通过自签名即可执行。

头文件

重载CCoeControl::Draw方法。.

// From CCoeControl
public:
    // Draws the view.
    void Draw(const TRect& aRect) const;

源文件

定义边框的颜色:

#define KBorderColor TRgb(180, 0, 0)

绘制将在CCoeControl::Draw完成，这样当view被绘制时边框也能显示了.

// Draws the view.
void CAppView::Draw(const TRect& aRect) const
    {
    CWindowGc& gc = SystemGc();
 
    // Draw the border around the component (iComponent)
    gc.SetBrushColor(KBorderColor);
    TRect rect = iComponent->Rect();
    // Enlarge the border rectangle so that it becomes visible. Without this,
    // the rect would only contain the innards of the component, which will
    // be obscured by the component itself.
    rect.Grow(3, 3);
    gc.DrawRect(rect);
    }