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Please help me.

I’m new to prof-uis.

Is it possible to make a preview window ( control-bar or any UI ) for the image in the CExtImageEditWnd derived class?

Prof-UI is excellent choice for me?

Thanks!

 

Yes, you can use the CExtImageEditWnd window as an image viewer only. Just create it with the __EIEDWS_READONLY style to disable editing.

You asked whether Prof-UIS is a good choice for you. You need to decide this yourself. Take a look at sample applications and read the forum messages.

Oups, sorry, I don’t mean it.

I mean two window : the one is for editing, and the other is for preview.

Preview window is smaller than editor window, and when the content of editing window changes, the preview window is updated.

 

It’s quite easy. Please use your own CExtImageEditWnd-derived class and override the IedUndo() virtual method like as follows:

INT C_YOUR_ImageEditWnd::IedUndo( INT nSteps )
{
    ASSERT_VALID( this );
INT nRetVal = CExtImageEditWnd::IedUndo( nSteps );
    _SyncViewerSurface();
    return nRetVal;
}

The _SyncViewerSurface() helper method of your image editor class should look like:

void C_YOUR_ImageEditWnd::_SyncViewerSurface()
{
    ASSERT_VALID( this );
    if( IedIsEmpty() )
        return;
HBITMAP hBitmap = IedBitmapGet();
    if( hBitmap == NULL )
    {
        ASSERT( FALSE );
        return;
    }
COLORREF * pClrSurface = NULL;
    hBitmap =
        CExtPaintManager::stat_CloneBitmap(
            hBitmap,
            NULL,
            &pClrSurface
            );
    if( hBitmap == NULL )
    {
        ASSERT( FALSE );
        return;
    }
    ASSERT( pClrSurface != NULL );
COLORREF clrTransparent = IedGetTransparencyColor();
    if( clrTransparent != ((COLORREF)(-1L)) )
    {
        COLORREF clrQuadTransparent =
            RGB(
                GetBValue(clrTransparent),
                GetGValue(clrTransparent),
                GetRValue(clrTransparent)
                );
        CSize _sizeImg = IedSizeGet();
        LONG nPixelCount = _sizeImg.cx * _sizeImg.cy;
        for( LONG nPixel = 0; nPixel < nPixelCount; nPixel++ )
            pClrSurface[nPixel] = clrQuadTransparent;
        CDC dc;
        if( dc.CreateCompatibleDC( NULL ) )
        {
            HGDIOBJ hBmpOld = ::SelectObject( dc, hBitmap );
            IedRender( dc );
            ::SelectObject( dc, hBmpOld );
        } // if( dc.CreateCompatibleDC( NULL ) )
#ifdef _DEBUG
        else
        {
            ASSERT( FALSE );
        } // else from if( dc.CreateCompatibleDC( NULL ) )
#endif // _DEBUG
    } // if( clrTransparent != ((COLORREF)(-1L)) )

CExtImageEditWnd * pWndIconViewer =
    . . .
    ASSERT_VALID( pWndIconViewer );
    pWndIconViewer->IedBitmapSet( hBitmap );
}

Thank you so much!

I’ll try it.