Re: Win32 vc++ Smooth Animation - C / C++ / MFC Discussion Boards

Re: How to display the item of a treectrl like this?

Iain Clarke, Warrior Programmer27-Jul-03 23:05

27-Jul-03 23:05

If you browse the Platform SDK, and look at the overview for Tree View controls, it has a few paragraphs
about "Item States", which is what you are interested in.

Look up these member functions / messages as well:

CTreeCtrl::SetImageList (CImageList *, TVSIL_STATE) / TVM_SETIMAGELIST, TVSIL_STATE, (LPARAM)hImageList.

Iain.

Re: How to display the item of a treectrl like this?

dan o27-Jul-03 23:13

dan o

27-Jul-03 23:13

hi,

create a imagelist
.h
CImageList m_cImageList;

.cpp

populate event()

if (1) //bDoThisOnlyOnce
m_cImageList.Create(IDB_TREEVIEW, 16, 10, RGB (255, 0, 255));
//IDB_TREEVIEW resource bitmap with a the all icons

GetTreeCtrl().SetImageList(&m_cImageList, TVSIL_NORMAL);

rootitem = GetTreeCtrl().InsertItem(TVIF_PARAM | TVIF_TEXT | TVIF_IMAGE | TVIF_SELECTEDIMAGE, _T("RootItem"), ILI_CLOSED_FOLDER, ILI_CLOSED_FOLDER, 0, 0, -1, TVI_ROOT, TVI_SORT );

//ILI_CLOSED_FOLDER, ILI_CLOSED_FOLDER <- item nr of imagelist

Add msg
.h
afx_msg void OnItemexpanded(NMHDR* pNMHDR, LRESULT* pResult);

.cpp
void CMyTreeView::OnItemexpanding(NMHDR* pNMHDR, LRESULT* pResult)
{
NM_TREEVIEW* pNMTreeView = (NM_TREEVIEW*)pNMHDR;
HTREEITEM hItem = pNMTreeView->itemNew.hItem;
CString string;string = GetPathFromItem (hItem);

*pResult = FALSE;
int inImage, inSelectedImage;

if (pNMTreeView->action == TVE_EXPAND)
{
if (GetTreeCtrl().GetParentItem (hItem) == NULL )
{
GetTreeCtrl().GetItemImage( hItem, inImage, inSelectedImage );
if (inImage == ILI_CLOSED_FOLDER && inSelectedImage == ILI_CLOSED_FOLDER)
{
GetTreeCtrl().SetItemImage( hItem, ILI_OPEN_FOLDER, ILI_OPEN_FOLDER);
}
}
}
else
{ // pNMTreeView->action == TVE_COLLAPSE
if (GetTreeCtrl().GetParentItem (hItem) == NULL)
{
GetTreeCtrl().GetItemImage( hItem, inImage, inSelectedImage );
if (inImage == ILI_OPEN_FOLDER && inSelectedImage == ILI_OPEN_FOLDER)
{
GetTreeCtrl().SetItemImage( hItem, ILI_CLOSED_FOLDER, LI_CLOSED_FOLDER);
}
}
}

hope it helps

dan o

hope it helps

Parameters for MSComm

petr.me27-Jul-03 21:37

petr.me

27-Jul-03 21:37

Hi all,

I use MSComm for serial communication with very simple external device:

CComVariant Transfer;
VariantClear(&Transfer);
Transfer = CString(CString((char)P_1) + CString((char)P_2) + CString((char)D_1) + CString((char)P_3));
msComm.SetOutput(Transfer);
// Wait for answer
VariantClear(&Transfer);
Transfer = msComm.GetInput();
CString sReturned = Transfer.bstrVal;

P_1, P_2, D_1, P_3 are constants and usually non zero - however, zero value generate problem. When D_1 == 0, CString is shortened (P_3 is missing) and communication fall in troubles.

How can I enter binary array into Transfer instead of text string? How can I retrieve binary array from Transfer filled with response?

Environment: W2k, VC++ 6

Thanks for suggestions.
Petr

Suche Leute zum MFC / C++ lernen

schonu27-Jul-03 21:04

schonu

27-Jul-03 21:04

:(Hallo !!

Ich suche Leute zum lernen von MFC und C++.
Ich komme aus der nähe von Dortmund und suche Leute aus dieser Region um sich 1 mal die Woche zu treffen und sich gemeinsam auszutauschen und zu lernen
Meldet Euch

cu

Dirk

cadnt@web.de</strike>

schonus

Re: Suche Leute zum MFC / C++ lernen

Philip Patrick28-Jul-03 1:20

Philip Patrick

28-Jul-03 1:20

Das ist English-speaking site AFAIK Smile | :)

Philip Patrick
Web-site: www.stpworks.com
"Two beer or not two beer?" Shakesbeer

Re: Suche Leute zum MFC / C++ lernen

peterchen28-Jul-03 4:41

peterchen

28-Jul-03 4:41

schon wen gefunden? Cool | :cool:

"Der Geist des Kriegers ist erwacht / Ich hab die Macht" StS

sighist | Agile Programming | doxygen

Win32 vc++ Smooth Animation

koxin27-Jul-03 20:54

koxin

27-Jul-03 20:54

Hello,
I've implemented double-buffering in my windows based game but the movement is still "choppy". Does anybody know how to get rid of this effect (i.e. syncronize the object's movement with the screen build-up)? Under DOS and Win16 I used to do this by reading directly from the VGA port but Win32 won't allow this.

thankx,

Koxin

Re: Win32 vc++ Smooth Animation

Iain Clarke, Warrior Programmer27-Jul-03 23:14

Iain Clarke, Warrior Programmer

27-Jul-03 23:14

In normal GDI, you can't do this. The nearest you can come is to draw into a memory DC and bitblt
it to the screen in one go. Which I assume you have done.

You need to move to DirectDraw / Direct3D. Then you can draw into a "back surface", and flip it
to the front synchronously with the screen redraw.

Such a change is beyond an answer in this forum, but there is a DirectX section on codeproject
which has a lot of examples for you.

Iain.

how can i apply a macro to all project files

sunil_g1727-Jul-03 20:15

sunil_g17

27-Jul-03 20:15

hi
i have written a macro, which will comment/uncomment all the occurences of a particular function call like all printfs in the opened file
i want to do the same operation for all project files,
can any one help me,

Regards
Sunil

How to PRINT MsWord DOC through VC++ Dlg based Prg

22491727-Jul-03 20:01

224917

27-Jul-03 20:01

How to PRINT MsWord Document through VC++ Dialog based Program.

Please Help me ..

Re: How to PRINT MsWord DOC through VC++ Dlg based Prg

wb27-Jul-03 22:41

27-Jul-03 22:41

hm.... If Word is installed on the PC, then you can
use ShellExecute() with the the "print" param.
If word is not installed.... Roll eyes | :rolleyes:

Saving graph

Neha27-Jul-03 20:00

Neha

27-Jul-03 20:00

Hello,

I have a graph displayed in a window. I want to save that graph in a .bmp file. I use VC++ 6.0 and MFC. How can i do that?

Best Regards
Neha

Re: Saving graph

Alexander ^M.,28-Jul-03 3:19

Alexander ^M.,

28-Jul-03 3:19

create a compatible dc, create a bitmap, select it, then draw on it by using gdi functions!
for storing it, read msdn!

Don't try it, just do it! Wink | ;-)

How can I clear drop list combo box?

Emre Zorlu27-Jul-03 19:46

Emre Zorlu

27-Jul-03 19:46

I can clear drop down combo box with
m_comboBox.SetSel (0,-1);
m_comboBox.Clear ();

but I can't clear drop list combo box !
How can I do this ?

emroz

Re: How can I clear drop list combo box?

Frank K27-Jul-03 19:52

Frank K

27-Jul-03 19:52

Hi,

use
m_comboBox.ResetContent();

Regards
Frank

Re: How can I clear drop list combo box?

Emre Zorlu27-Jul-03 21:23

Emre Zorlu

27-Jul-03 21:23

m_comboBox.ResetContent();
delete all content
and
m_comboBox.DeleteString(ndx);
delete one string.

I don't wanna delete any string.
I just wanna make null.

emroz

Re: How can I clear drop list combo box?

David Crow28-Jul-03 5:16

David Crow

28-Jul-03 5:16

Emre Zorlu wrote:
I just wanna make null.

Which makes no sense in this context. If you are not wanting to remove any items from the control, what are you wanting to do? If you simply want to add an empty string to the control, use AddString("").

Re: How can I clear drop list combo box?

wb27-Jul-03 22:42

27-Jul-03 22:42

m_comboBox.SetCurSel(-1)

web cam

Anonymous27-Jul-03 18:07

Anonymous

27-Jul-03 18:07

is there a way I can control the working of a webcam using a windows application . if yes what are the API's I need to look at ?

Re: web cam

Beer2627-Jul-03 18:28

Beer26

27-Jul-03 18:28

http://msdn.microsoft.com/library/default.asp?url=/library/EN-US/netmeet/nmstartpage_3bov.asp[^]

you can get the platform sdk here

http://www.microsoft.com/msdownload/platformsdk/sdkupdate/ [^]

These links will get you started with the netmeeting sdk, which is the easy way out of writing networking cam software. If you want to really write your own software from scratch, I'm sure somebody else will post some information for you as well for that. Or maybe not.

Re: web cam

csc27-Jul-03 21:09

csc

27-Jul-03 21:09

you may try this link :

http://www.naughter.com/vfwgrab.htm

The app was made for posting images into web, but you may use the code (or some snippets) for your own ideas.

Smile | :)

Re: web cam

Anonymous28-Jul-03 5:18

Anonymous

28-Jul-03 5:18

Thank you for the help but I am unable to locate
<gdiplus.h>

included in stdafx.h

Re: web cam

Anonymous28-Jul-03 5:19

Anonymous

28-Jul-03 5:19

i meant gdiplus.h

Re: web cam

csc28-Jul-03 19:41

csc

28-Jul-03 19:41

ok, got the problem .... i've downloaded that source and the needed gdiplus files are not included.

So try this ... there is an other article named hints get GDI+ running
here at codeproject :

http://www.codeproject.com/useritems/codemaze.asp

http://www.codeproject.com/useritems/CodeMaze/GDI+Files.zip

The download file is about 1 MB big, but includes a complete gdi+ version (gdiplus*.* => dll, lib, headers). I have not tried to merge both projects and re-compile the exe, but if there are problems you may ask PJ Naughter directly for a hint.

Re: web cam

Andrew Walker28-Jul-03 1:03

Andrew Walker

28-Jul-03 1:03

If you want to control the properties of the camera try DirectShow, specifically:

the IAMCameraControl Interface
the IAMVideoProcAmp Interface

IAMCameraControl gives you access to

typedef enum {<br />
    CameraControl_Pan = 1,<br />
    CameraControl_Tilt,<br />
    CameraControl_Roll,<br />
    CameraControl_Zoom,<br />
    CameraControl_Exposure,<br />
    CameraControl_Iris,<br />
    CameraControl_Focus<br />
} CameraControlProperty;

IAMVideoProcAmp gives you access to

typedef enum tagVideoProcAmpProperty<br />
{<br />
    VideoProcAmp_Brightness,<br />
    VideoProcAmp_Contrast,<br />
    VideoProcAmp_Hue,<br />
    VideoProcAmp_Saturation,<br />
    VideoProcAmp_Sharpness,<br />
    VideoProcAmp_Gamma,<br />
    VideoProcAmp_ColorEnable,<br />
    VideoProcAmp_WhiteBalance,<br />
    VideoProcAmp_BacklightCompensation,<br />
    VideoProcAmp_Gain<br />
} VideoProcAmpProperty;

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Are losing theirs and blaming it on you;
If you can dream - and not make dreams your master;
If you can think - and not make thoughts you aim;
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