CXTPImageManagerIcon::DrawAlphaBitmap() wont work : I found the origin of the problem:...

Fri, 31 Dec 2010 16:51:11 +0000

Author: tomay3000
Subject: 17737
Posted: 31 December 2010 at 4:51pm

I found the origin of the problem: It was that the PNG image I was using as resource has wrong PNG structure (I corrected it using GIMP).

CXTPImageManagerIcon::DrawAlphaBitmap() wont work : CXTPImageManagerIcon::DrawAlphaBitmap()...

Thu, 30 Dec 2010 17:01:41 +0000

Author: tomay3000
Subject: 17737
Posted: 30 December 2010 at 5:01pm

CXTPImageManagerIcon::DrawAlphaBitmap() wont work on OnDraw() virtual function Views !?

void CGLVAgenceView::OnInitialUpdate()
{
    m_pSet = &GetDocument()->m_gLVAgenceSet;
    CRecordView::OnInitialUpdate();
    GetParentFrame()->RecalcLayout();
    ResizeParentToFit();

    HRSRC hResource = ::FindResource(NULL, MAKEINTRESOURCE(IDR_PNG1), _T("PNG"));
    CXTPGraphicBitmapPng bmpPNG;

    if (!bmpPNG.LoadFromResource(NULL, hResource))
    {
        TRACE0("Failed to load PNG from resource\n");
        return;      // fail load PNG from resource
    }
    if (!m_bmp.Attach(CXTPImageManagerIcon::PreMultiplyAlphaBitmap(bmpPNG)))
    {
        TRACE0("Failed to attach bmp\n");
        return;      // fail to attach bmp
        bmpPNG.DeleteObject();
    }
}

void CGLVAgenceView::OnDraw(CDC* pDC) 
{
    // TODO: Add your specialized code here and/or call the base class

    CXTPImageManagerIcon::DrawAlphaBitmap(pDC, m_bmp, CPoint(7, 7), CSize(48, 48));
}

Where:

private:
    CBitmap m_bmp;

is previously declared.

And my CGLVAgenceView is a CRecordView derived class.

I tested the same code on an CDialog OnPaint() message map function & it's working perfectly.

Any idea ?

Codejock Developer Community : CXTPImageManagerIcon::DrawAlphaBitmap() wont work

CXTPImageManagerIcon::DrawAlphaBitmap() wont work : I found the origin of the problem:...

CXTPImageManagerIcon::DrawAlphaBitmap() wont work : CXTPImageManagerIcon::DrawAlphaBitmap()...