CBCGPGraphicsManagerHelper

Detailed Description

Produce the following steps to add Graphics Manager to your CWnd-derived class:

1. Derive your class from CBCGPGraphicsManagerHelper (multiple inheritance).
2. Override OnGraphicsManagerDraw() method and call required drawing methods such as pGM->FillRectangle, pGM->DrawText or pGM->DrawLine.
3. Call DoGraphicsManagerDraw() from OnPaint or OnDraw methods.

The following code demonstrates how to use CBCGPGraphicsManagerHelper in CView-derived class:

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class CMyView : public CView,

public CBCGPGraphicsManagerHelper

{

...

virtual void OnGraphicsManagerDraw(CBCGPGraphicsManager* pGM, const CBCGPRect& rect, BOOL bIsPrinting);

};

void CMyView::OnDraw(CDC* pDC)

{

DoGraphicsManagerDraw(pDC, this);

}

void CMyView::OnGraphicsManagerDraw(CBCGPGraphicsManager* pGM, const CBCGPRect& rectClient, BOOL /*bIsPrinting*/)

{

CBCGPRect rect(50, 50, 300, 200);

// For better performance we recommend to make CBCGPBrush resources as class member variables

// and setup them in the constructor.

CBCGPBrush brFill(CBCGPColor::LightGreen, CBCGPColor::White, CBCGPBrush::BCGP_GRADIENT_RADIAL_TOP_LEFT);

CBCGPBrush brBorder(CBCGPColor::DarkGreen);

CBCGPBrush brText(CBCGPColor::Black);

CBCGPTextFormat tf;

tf.SetTextAlignment(CBCGPTextFormat::BCGP_TEXT_ALIGNMENT_CENTER);

tf.SetTextVerticalAlignment(CBCGPTextFormat::BCGP_TEXT_ALIGNMENT_CENTER);

pGM->FillRectangle(rect, brFill);

pGM->DrawRectangle(rect, brBorder);

CString strText = _T("Hello, Graphics Manager!");

pGM->DrawText(strText, rect, tf, brText);

}