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Contents 1 简介 2 MMP文件 3 Header file 4 源文件 5 后记 6 See also

简介

S60第五版手机触摸屏API没有CBA按钮支持，因此如果我们想要全屏模式我们必须要隐藏control pane.否则用户将无法访问访问菜单等功能。

为了计算全屏模式下应用程序区域（如control pane的区域大小。我们可以使用Avkon helper类AknLayoutUtils来获取。

MMP文件

LIBRARY avkon.lib
LIBRARY eikcore.lib
CAPABILITY could be self-signed

Header file

class CAknViewClass: public CAknView ...
{
...
public:
   void ConstructL();
   void SetFullRect();
private:
   void CalculateFullscreenRect();
private:
   TRect iFullRect;
...
};

class CAknAppUiClass: public CAknAppUi
{
...
protected:
void HandleResourceChangeL( TInt aType );
 
private:
   CAknViewClass* iViewInstance;
...
};

源文件

#include <AknUtils.h> 
...
void CAknViewClass::ConstructL()
{
   ...
   // Calculate actual full-screen mode rect
   CalculateFullscreenRect();
   // Set view extent
   SetRect(iFullRect);
   ...
}
 
void CAknViewClass:SetFullRect()
{
   SetRect(iFullRect);
}
...
void CAknViewClass::CalculateFullscreenRect()
{
   // Window that fills the entire screen
   TRect temp_rect;
   AknLayoutUtils::LayoutMetricsRect(AknLayoutUtils::EApplicationWindow, temp_rect);
   iFullRect = temp_rect;
 
   // Rect that occupied by control pane (i.e. CBA)
   AknLayoutUtils::LayoutMetricsRect(AknLayoutUtils::EControlPane, temp_rect);
 
   // Calculate final rect which depends on CBA location
   AknLayoutUtils::TAknCbaLocation cba_location = AknLayoutUtils::CbaLocation();
 
   switch(cba_location) {
      case AknLayoutUtils::EAknCbaLocationBottom:
         iFullRect.iBr.iY -= temp_rect.Height();
      break;
 
      case AknLayoutUtils::EAknCbaLocationLeft:
	 iFullRect.iTl.iX += temp_rect.Width();
      break;
 
      case AknLayoutUtils::EAknCbaLocationRight:
	 iFullRect.iBr.iX -= temp_rect.Width();
      break;
 
      default:
      break;
   }
}

CAknAppUiClass::HandleResourceChangeL( TInt aType )
{
   ...
   iViewInstance->CalculateFullscreenRect();
 
   iViewInstance->SetFullRect();
   ...
}

后记

全屏模式将可以在程序中使用，并支持触摸UI

See also

How to make a full-screen application using Symbian C++