Re: DirectDraw question : about Overlay - C / C++ / MFC Discussion Boards

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(Previously) undocumented Win32 APIs

Ravi Bhavnani1-Apr-03 2:02

Ravi Bhavnani

1-Apr-03 2:02

Clickety[^]

/ravi

Let's put "civil" back in "civilization"
http://www.ravib.com
ravib@ravib.com

Re: (Previously) undocumented Win32 APIs

User 98851-Apr-03 6:55

User 9885

1-Apr-03 6:55

I see FindWindow and FindWindowEx in the list. Were they undocumented?

My article on a reference-counted smart pointer that supports polymorphic objects and raw pointers

modified 29-Aug-18 21:01pm.

Re: (Previously) undocumented Win32 APIs

Ryan Binns1-Apr-03 12:56

Ryan Binns

1-Apr-03 12:56

Thomas George wrote:
I see FindWindow and FindWindowEx in the list. Were they undocumented?

No, I actually recognise a lot of them...

Ryan

He who laughs last thinks too slowly.

Traduce from binary to decimal

calgonit1-Apr-03 2:00

calgonit

1-Apr-03 2:00

I need to do the same with Byte (VT_UI1), Short(VT_I2), float(VT_R4), and other VARIANT that what I have made with long (VT_I4).

How I can do it?

Thanks.

A part of the code:

for (long k=0;k<TOTALNUMPARAM;k++)<br />
	{<br />
		SafeArrayGetElement (PVAVLISTAVALORESPARAMETROS.parray,&k,&item);<br />
		switch (item.vt)<br />
		{<br />
		case VT_UI1:<br />
			break;<br />
		case VT_I2:<br />
			break;<br />
		case VT_I4:	// long<br />
			// The actual input's k-th parameter is of long type. It's traduced from<br />
			// binary to decimal assuming the representation is in C2 and with 32 bits.<br />
			item.lVal = 0;<br />
			if (input[parameter_start] == 0)<br />
			{<br />
				// It's positive.<br />
				for (int l=parameter_start+1;l<(parameter_start+32);l++)<br />
					item.lVal += input[l]*(int)pow(2,(parameter_start+32)-l-1);<br />
			}<br />
			else<br />
			{<br />
				// It's negative.<br />
				for (int l=parameter_start+1;l<(parameter_start+32);l++)<br />
					item.lVal += ((input[l]+1)%2)*(int)pow(2,(parameter_start+32)-l-1);<br />
				item.lVal++;<br />
				item.lVal *= (-1);<br />
			}<br />
			// Updating the k-th parameter and local variables.<br />
			parameter_start += 32;<br />
			SafeArrayPutElement (PVAVLISTAVALORESPARAMETROS.parray,&k,&item);<br />
			VariantInit(&item);<br />
			break;<br />
		case VT_R4:<br />
			break;<br />
                //Rest of switch with the other VARIANT

Hebrew and ResourceView on VC6

JolyGod1-Apr-03 1:21

JolyGod

1-Apr-03 1:21

Does anyone know how could I make the resource view support hebrew?

under "...\VC98\MFC\Include" I do not have a library "l.heb", does anyone where could I find a download for this?

DirectDraw question : about Overlay

Raphael Kindt1-Apr-03 1:18

Raphael Kindt

1-Apr-03 1:18

Hi...

I'm trying to create a single flippable overlay surface with a specific pixel format. Here is this pixel format:

DDPIXELFORMAT ddpf = { sizeof(DDPIXELFORMAT), DDPF_RGB | DDPF_PALETTEINDEXED8, 0, 8, 0, 0, 0, 0}; // 8-bit B&W

In fact I want a 8 BPP surface... I've already try this format too:

DDPIXELFORMAT ddpf = { sizeof(DDPIXELFORMAT), DDPF_RGB, 0, 8, 0xFF, 0xFF, 0xFF, 0}; // 8-bit B&W

But the result is the same... That's failed when I create the corresponding surface.
Why this failed?... I suppose that is a Hardware capabilities problem...

Thanks for all who can help me !!!

Hello World!!! Smile | :)

from Raphaël

Re: DirectDraw question : about Overlay

Daniel Strigl1-Apr-03 2:46

Daniel Strigl

1-Apr-03 2:46

Can you show us the code where you create the overlay surface!?

Daniel Wink | ;)

---------------------------
Never change a running system!

Re: DirectDraw question : about Overlay

Raphael Kindt1-Apr-03 4:19

Raphael Kindt

1-Apr-03 4:19

Yes I can.... Smile | :)

It's a little big but here is:
Note that I work in windowed mode (not Fullscreen)...

CString str_err = "";
HRESULT ddrval = DD_OK;
DDSURFACEDESC2 ddsd;
int i = 0;

DDPIXELFORMAT ddpf = { sizeof(DDPIXELFORMAT), DDPF_RGB | DDPF_PALETTEINDEXED8,
    0, 8, 0xFF, 0xFF, 0xFF, 0}; // 8-bit B&W

// The overlay surface
//--------------------

// Try Overlay with double buffered complex overlay surface
ZeroMemory(&ddsd, sizeof(ddsd));
ddsd.dwSize = sizeof(ddsd);

ddsd.ddsCaps.dwCaps     = DDSCAPS_OVERLAY | DDSCAPS_FLIP | DDSCAPS_COMPLEX | DDSCAPS_VIDEOMEMORY;
ddsd.dwFlags            = DDSD_CAPS | DDSD_HEIGHT | DDSD_WIDTH | DDSD_BACKBUFFERCOUNT | DDSD_PIXELFORMAT;
ddsd.dwWidth            = MAX_DST_OV_WIDTH;
ddsd.dwHeight           = MAX_DST_OV_HEIGHT;
ddsd.dwBackBufferCount  = 1;
ddsd.ddpfPixelFormat    = ddpf;

ddrval = lpDD->CreateSurface(&ddsd, &lpDDS_POVideo, NULL);
if(FAILED(ddrval))
{
    str_err.Format("We couldn't create an overlay flippable surface? Code error %.8xh", ddrval);
    MessageBox(str_err);
    return FALSE;
}

// Get a pointer to the backbuffer that we will later draw to
DDSCAPS2 caps;
caps.dwCaps = DDSCAPS_BACKBUFFER;
caps.dwCaps2 = caps.dwCaps3 = caps.dwCaps4 = 0;
ddrval = lpDDS_POVideo->GetAttachedSurface(&caps, &lpDDS_BOVideo);
if( FAILED(ddrval) )
{
    str_err.Format("lpDDS_POVideo->GetAttachedSurface failed with code %.8xh", ddrval);
    MessageBox(str_err);
    return FALSE;
}

I suppose that's OK... But the 8 BPP pixel format always failed...
I hope that it's what you want.

Hello World!!! Smile | :)

from Raphaël

How to maximize a child window in a MDI project

uNsignedINT31-Mar-03 23:23

uNsignedINT

31-Mar-03 23:23

Hello, I don't know how to get my child window maximized when my app starts!
Need help!!!
Thanks! Frown | :(

Re: How to maximize a child window in a MDI project

tomiczek31-Mar-03 23:44

tomiczek

31-Mar-03 23:44

overwite the function ActivateFrame in your derived CMDIChildWnd class.
usually it is called CChildFrame...

implement it like this:

void CChildFrame::ActivateFrame(int nCmdShow)
{
// TODO: Speziellen Code hier einfügen und/oder Basisklasse aufrufen
nCmdShow = SW_SHOWMAXIMIZED;
CMDIChildWnd::ActivateFrame(nCmdShow);
}

Re: How to maximize a child window in a MDI project

uNsignedINT2-Apr-03 5:52

uNsignedINT

2-Apr-03 5:52

Thank you!! It did the trick!
See ya!

Re: How to maximize a child window in a MDI project

Alin Negru31-Mar-03 23:57

Alin Negru

31-Mar-03 23:57

Add a handler for WM_CREATE in CChildFrame and there ShowWindow(SW_MAXIMIZE);

splitter window

sameer_ba31-Mar-03 22:56

sameer_ba

31-Mar-03 22:56

Hello friends,

I am using a TVisualObject class given by Zoran M. Todorovic

I am able to split and place the tabs but one of the splitted window is occupying the entire space.I tried with changing the parametrew of CSize fn but its not working.i have attached the piece of code.Please suggest me to resize the window.

TVisualObject *pSplitter = new TVisualObject(1,"", 2, 1, pContext);
TVisualObject *pView1 = new TVisualObject(2,0,0,pContext, RUNTIME_CLASS(CDummyEdit), CSize(0,880));
TVisualObject *pView12 = new TVisualObject(13,0,0,1,2,pContext);
TVisualObject *pw12 = new TVisualObject(14,0,0,pContext,RUNTIME_CLASS(CDummyEdit),CSize(330,30));
TVisualObject *pw22 = new TVisualObject(15,0,1,pContext,RUNTIME_CLASS(CDummyEdit),CSize(0,80));

TVisualObject *pViewtab1 = new TVisualObject(3,1,0,pContext,RUNTIME_CLASS(TTabWnd),CSize(770,660));
TVisualObject *pTabView1 = new TVisualObject(4,"Log",pContext,RUNTIME_CLASS(CDummyEdit));
TVisualObject *pTabView2 = new TVisualObject(5,"Summary", pContext,RUNTIME_CLASS(CDummyTree));
//pTabView2->SetIcon(IDR_FINALTYPE);

m_Framework.Add(pSplitter);

m_Framework.Add(pSplitter, pView12);
m_Framework.Add(pView12,pw12);
m_Framework.Add(pView12,pw22);

m_Framework.Add(pSplitter, pViewtab1);
m_Framework.Add(pViewtab1,pTabView1);
m_Framework.Add(pViewtab1,pTabView2);

m_Framework.Create(this);
TVisualFrameworkIterator it(m_Framework);
while (!it.End()) {
TVisualObject *pObject = it.Get();
it++;
}
m_Framework.SetActivePane(pView12);
return TRUE;

Title Bar Buttons

Jim Busse31-Mar-03 22:36

Jim Busse

31-Mar-03 22:36

I have not been able to find a simple way to show only the minimize or maximize buttons on the title bar. Whether or not I include WS_SYSMENU in the createstruct.style, it seems the WS_MAXIMIZEBOX and WS_MINIMIZEBOX bits only enable/disable the functions of the boxes, but they both seem to show regardless of the settings. Is there any simple way to show only one of the boxes? Or do I have to get out of MFC and create my own main frame window? Thanks for any suggestions.

check whether a particular directory exists

naradaji31-Mar-03 22:35

naradaji

31-Mar-03 22:35

Hi all,

I need to check in my MFC 7 application whether a particular directory exists.
How can I do this?
I know how to create a directory, but not how to check whether it exists or not.

Thanks so much!

-- narada

Confused | :confused:

Re: check whether a particular directory exists

SteveKing31-Mar-03 22:50

SteveKing

31-Mar-03 22:50

BOOL PathFileExists(
LPCTSTR pszPath
);

Re: check whether a particular directory exists

naradaji31-Mar-03 23:10

naradaji

31-Mar-03 23:10

Thanks so much!

Just what I needed!

-- narada

dialog window question?

Anonymous31-Mar-03 22:17

Anonymous

31-Mar-03 22:17

how to create a modeless dialog window which behaves exactly the same as the "downloading window" from the Windws OS. what I really mean? I don't want this window to disapper when i minimize the main application. If i minimize the dialog I want to place it on the task bar, not on the main screen.

Waiting for your advices....

Re: dialog window question?

C^hris L^osinger1-Apr-03 3:33

C^hris L^osinger

1-Apr-03 3:33

try making the modeless dialog a child of the desktop, not of the main application. do this in the "Create" call to the modeless dlg. that should fix the minimize issue you describe.

-c

Image tools: ThumbNailer, Bobber, TIFFAssembler

Windows Media Player and how to draw lines

darksidex31-Mar-03 21:40

darksidex

31-Mar-03 21:40

This is my problem. I have to draw some lines over a media player control while it's displaying a video, and I can't do it. I just can do it if I don't load the video. Anyone can help me?

detect click on link

jeremysay31-Mar-03 21:31

jeremysay

31-Mar-03 21:31

hello,
in CHtmlView how detect the user click on a link, and how get the link URL.
I want to block Ad popup, so i do :

void CSpy4WebView::OnNewWindow2(LPDISPATCH* ppDisp, BOOL* Cancel)
{
	// TODO : ajoutez ici votre code spécialisé et/ou l'appel de la classe de base
        *Cancel = true;
}

that's why i want to detect if the new window is ad, or if the new window is called by the user.

thx for your help.

Re: detect click on link

Joan M31-Mar-03 22:23

Joan M

31-Mar-03 22:23

Take a look at my article, it's a wrapper class written by Paul DiLascia's and there is a sample on how to catch HTML Events...

If you want, you can only use that part...

Hope this helps...

the article is: http://www.codeproject.com/useritems/HTMLCtrlSample.asp[^]

Re: detect click on link

jeremysay31-Mar-03 22:53

jeremysay

31-Mar-03 22:53

Thx Joan,
i'm trying to understand your code but it is hard for me...

Re: detect click on link

Joan M31-Mar-03 23:09

Joan M

31-Mar-03 23:09

You are welcome, the article was written in order to get the feedback from other CPians, so ask whatever you need and tell me whatever you think that should be improved.

Frame URL

jeremysay31-Mar-03 21:16

jeremysay

31-Mar-03 21:16

Hello,
I work with CHtmlView, and i want to know the url of activate frame.
You know how to get this ?
thx in advance

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