Convert DLU to pixels

[David Briggs]

I need to layout some child dialog dynamically. How can one convert from
DLU to pixels and back?
Thanks

[Jeff Partch [MVP]]

"David Briggs" <s...@s.com> wrote in message
news:pPglc.49655$2v.1...@nwrdny02.gnilink.net...

> I need to layout some child dialog dynamically. How can one convert from
> DLU to pixels and back?

http://support.microsoft.com/default.aspx?scid=kb;en-us;125681
http://support.microsoft.com/default.aspx?scid=kb;en-us;145994

Additionally, AtlWin.h has an implementation of a ConvertDialogUnitsToPixels
function.

--
Jeff Partch [VC++ MVP]

[Uwe Kotyczka]

"David Briggs" <s...@s.com> wrote in message news:<pPglc.49655$2v.1...@nwrdny02.gnilink.net>...

> I need to layout some child dialog dynamically. How can one convert from
> DLU to pixels and back?
> Thanks

int MapDialogUnitX(int nX, CWnd* pWnd)
{
ASSERT(::IsWindow(pWnd->GetSafeHwnd()));
CRect rect(0, 0, nX, 0);
if (MapDialogRect(pWnd->GetSafeHwnd(), &rect))
nX = rect.right;
else
{
TRACE("MapDialogUnitX: GetLastError returned %d.\n", GetLastError());
nX = -1;
}
return nX;
}

int MapDialogUnitY(int nY, CWnd* pWnd)
{
ASSERT(::IsWindow(pWnd->GetSafeHwnd()));
CRect rect(0, 0, 0, nY);
if (MapDialogRect(pWnd->GetSafeHwnd(), &rect))
nY = rect.bottom;
else
{
TRACE("MapDialogUnitY: GetLastError returned %d.\n", GetLastError());
nY = -1;
}
return nY;
}

HTH

[Joseph M. Newcomer]

Mostly by ignoring their existence. I've ignored DBUs for the last 12 years or so without
harm. Can you describe your need for DBUs a bit more?
joe

Joseph M. Newcomer [MVP]
email: newc...@flounder.com
Web: http://www.flounder.com
MVP Tips: http://www.flounder.com/mvp_tips.htm