C / C++ / MFC

Re: Does GDI+ support resizing a gif file?

6-Jul-08 22:55

I tried to construct a Bitmap object using a gif file.
And use Graphics::DrawImage to draw it in the size other then the original one.
It displays a black box.
Doesn't GDI+ support this?

If not, does CImage support this?

The 3rd party support will be the last resort.

Thanks.

system

modified on Monday, July 7, 2008 5:03 AM

James R. Twine7-Jul-08 1:18

James R. Twine

7-Jul-08 1:18

Have you tried drawing it normally (without scaling) to make sure you have it loaded and are trying to draw it correctly?

Peace!

-=- James
Please rate this message - let me know if I helped or not!<hr></hr>If you think it costs a lot to do it right, just wait until you find out how much it costs to do it wrong!
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Re: Does GDI+ support resizing a gif file?

followait7-Jul-08 4:20

Re: Does GDI+ support resizing a gif file?

7-Jul-08 4:20

It's ok without scaling.

system

James R. Twine7-Jul-08 11:03

James R. Twine

7-Jul-08 11:03

Then I have no idea... Graphics::DrawImage(...) is supposed to support scaling all by itself, so if you constructed the Graphics object using the Image object that contains the loaded GIF, it should work...

Peace!

Why can't the CWnd be shown?

followait6-Jul-08 21:55

Re: Why can't the CWnd be shown?

6-Jul-08 21:55

CPropWnd is derived from CDockablePane, and CNavWnd is derived from CWnd.

Here is the handler for the "show navigator button":

void CPropWnd::OnShowNavigatorWnd()
{
	CNavWnd *pNav = new CNavWnd(this);

	CRect rc;
	rc.SetEmptyRect();
	if (!pNav->Create(NULL, NULL, WS_VISIBLE | WS_OVERLAPPEDWINDOW, rc, this, UINT(-1)))
	{
		ASSERT(FALSE); //it's ok, never got here
	}
	GetWindowRect(&rc);
	pNav->SetWindowPos(NULL, rc.right + 5, rc.top, -1, -1,
		SWP_NOSIZE | SWP_NOZORDER | SWP_SHOWWINDOW); // the size of nav wnd will be assigned in CNavWnd::OnCreate() by itself
	pNav->UpdateWindow();
}

Why the navigaotr windows can't be shown?

system

baerten6-Jul-08 22:33

baerten

6-Jul-08 22:33

Hi, already tried to give a positive ID to the control?
Propably it helps

Greets

Re: Why can't the CWnd be shown?

followait7-Jul-08 0:42

Re: Why can't the CWnd be shown?

7-Jul-08 0:42

Yes. No help.

system

KarstenK6-Jul-08 22:47

KarstenK

6-Jul-08 22:47

look where your window is:
pNav->GetWindowRect(&rc);

I advise you create the windows with useful values. Call GetWindowRect(&rc); before Create(). $Shucks | :-\$

Greetings from Germany

CMonthCalCtrl

Paulraj G6-Jul-08 20:58

Paulraj G

6-Jul-08 20:58

hi...

am using windows mobile 6.0.

here in my application to show tha current date i used the following code

CString pDate, pDate2;
SYSTEMTIME ct;
CMonthCalCtrl m_MonthCal_1;
m_MonthCal_1.GetCurSel(&ct);

//int day = ct.GetDay();
m_MonthCal_1.GetToday(&ct);
pDate.Format(_T("%d/%d/%d"),ct.wDay,ct.wMonth,ct.wYear);
AfxMessageBox(pDate); // just for testing

but it not shows the current date.

what is the mistake in my code...

can u pls anyone tell the reason?

thank you...

paulraj

Cedric Moonen6-Jul-08 21:32

Cedric Moonen

6-Jul-08 21:32

gnanapaul wrote:
CMonthCalCtrl m_MonthCal_1;

Why are you creating a new instance of the control ?
How did you create the control in fact ? Did you use the resource editor ? If yes, then you first need to associate a variable to this control and use that variable to interact with the control.

Cédric Moonen
Software developer

Charting control [v1.4]
OpenGL game tutorial in C++ [New]

Re: CMonthCalCtrl [modified]

CPallini6-Jul-08 21:37

CPallini

6-Jul-08 21:37

Possibly you've first to initialize the control with current time, via SetToday method, for instance:

COleDateTime now = COleDateTime::GetCurrentTime();
m_MonthCal_1.SetToday(now);

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong.
-- Iain Clarke

[My articles]

Paulraj G6-Jul-08 21:47

Paulraj G

6-Jul-08 21:47

thanks for ur guidance...

its working smartly. it shows the current date.

how to show the user selected date?

paulraj

modified on Monday, July 7, 2008 3:58 AM

You're welcome.

CPallini6-Jul-08 21:53

CPallini

6-Jul-08 21:53

CPallini6-Jul-08 22:20

CPallini

6-Jul-08 22:20

gnanapaul wrote:
how to show the user selected date?

GetCurSel method should do the job.
Smile | :)

Can't figure out this error...

Paulraj G6-Jul-08 23:06

Paulraj G

6-Jul-08 23:06

thank you once again for your kind guidence

paulraj

AndreFratelli6-Jul-08 20:18

6-Jul-08 20:18

Hi
I'm having the following error message when compiling a project with VS2005

e:\projects\netsim\netsim\grafo.cpp(66) : error C2679: binary '=' : no operator found which takes a right-hand operand of type 'std::_Vector_const_iterator<_Ty,_Alloc>' (or there is no acceptable conversion)
        with
        [
            _Ty=Ligacao *,
            _Alloc=std::allocator<Ligacao *>
        ]
        c:\program files (x86)\microsoft visual studio 8\vc\include\vector(392): could be 'std::_Vector_iterator<_Ty,_Alloc> &std::_Vector_iterator<_Ty,_Alloc>::operator =(const std::_Vector_iterator<_Ty,_Alloc> &)'
        with
        [
            _Ty=Ligacao *,
            _Alloc=std::allocator<Ligacao *>
        ]
        while trying to match the argument list '(std::_Vector_iterator<_Ty,_Alloc>, std::_Vector_const_iterator<_Ty,_Alloc> )'
        with
        [
            _Ty=Ligacao *,
            _Alloc=std::allocator<Ligacao *>
        ]

The code is:

std::vector<Ligacao *>::iterator it;

for (it=this->_m_graf_map[_onde].begin() ; it != this->_m_graf_map[_onde].end() ; it++)
{
    if (
        ((*it)->esquerda()->id() == _esq && (*it)->direita()->id() == _dir) ||
        ((*it)->esquerda()->id() == _dir && (*it)->direita()->id() == _esq)
    ) return true;
}

Where _m_graf_map is defined as:

std::vector<std::vector<Ligacao *> >	_m_graf_map;

Does anybody know what am I doing wrong?

Fratelli

Naveen6-Jul-08 20:36

Naveen

6-Jul-08 20:36

if _m_graf_map is like

std::vector<std::vector<Ligacao *> >	_m_graf_map;

Then the iterator it should be defined like

std::vector<std::vector<Ligacao *> >::iterator it;

isnt it?

nave

[OpenedFileFinder]

AndreFratelli6-Jul-08 20:49

6-Jul-08 20:49

At first I tried it too, but I'm not actually iterating through _m_graf_map but _m_graf_map[_ond], which has type std::vector<Ligacao *>.

best regards

Fratelli

BadKarma6-Jul-08 20:57

BadKarma

6-Jul-08 20:57

Hi,

I don't see it either, but you can try to split the code up to make it easier top spot it.
According to the error messages the iterator believes it should use the const iterator instead of the non-const version.

std::vector<ligacao> lstLigacao = this->_m_graf_map[_onde];
std::vector<ligacao>::iterator it;

for(it = lstLigacao.begin() ; it != lstLigacao.end() ; it++)
{
	if (
		((*it)->esquerda()->id() == _esq && (*it)->direita()->id() == _dir) ||
		((*it)->esquerda()->id() == _dir && (*it)->direita()->id() == _esq)
	) return true;
}</ligacao></ligacao>

Learn from the mistakes of others, you may not live long enough to make them all yourself.

AndreFratelli6-Jul-08 21:11

6-Jul-08 21:11

That works! But I can't afford to copy an entire array like that =/

If that's the case, I rather use vector<>::size_type to iterate through the elements

But why does this happen? I mean, lstLigacao and _m_graf_map[_ond] have exactly the same type, right? So why does the iterator work with one, but not the other? Confused | :confused:

Best regards

Fratelli

BadKarma6-Jul-08 21:41

BadKarma

6-Jul-08 21:41

Hi,

I have tried your code, and it works. I'm using VS2005.
But you don't need to copy the array, you could use a reference to it;

std::vector<Ligacao *>& refList = _m_graf_map[_ond];

and use the reference

Learn from the mistakes of others, you may not live long enough to make them all yourself.

AndreFratelli6-Jul-08 22:28