Drawing custom borders around a Symbian control
m |
m (Protected "Drawing Custom Borders" [edit=sysop:move=sysop]) |
Revision as of 14:36, 15 February 2008
| ID | Creation date | February 6, 2008 | |
| Platform | S60 3rd Edition S60 3rd Edition, FP1 S60 3rd Edition, FP2 |
Tested on devices | Nokia E90 Communicator Nokia N95 8 GB |
| Category | Symbian C++ | Subcategory | UI |
| APIs | None | Classes | CWindowGc CGraphicsContext TRect |
| Methods | CCoeControl::Draw |
Overview
In this code snippet, a custom border is drawn around a GUI component.
This snippet can be self-signed.
Header file
Override CCoeControl::Draw method.
// From CCoeControl
public:
// Draws the view.
void Draw(const TRect& aRect) const;
Source file
Define the color of the border:
#define KBorderColor TRgb(180, 0, 0)
The drawing is implemented in CCoeControl::Draw method so that the border is drawn every time the view is drawn.
// 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();
// Grow 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);
}
