C / C++ / MFC Discussion Boards

CListCtrl : How to un-select item in the list programmatically ?

xanagan6665-Dec-07 19:51

xanagan666

5-Dec-07 19:51

How can I programatically un-select the item in the list (Report view) ?

Thank in advance

Somboon

Re: CListCtrl : How to un-select item in the list programmatically ?

Naveen5-Dec-07 20:50

Naveen

5-Dec-07 20:50

xanagan666 wrote:
How can I programatically un-select the item in the list (Report view) ?

call SetItemState() function

m_List.SetItemState( nItem, 0, LVIS_SELECTED );

if you know the item index to un-select, you can set that value to the nItem. if you set nItem as -1, all selected items will be unselected.

nave

[OpenedFileFinder]

How do I detect the audio/video capabilities on machine

jit_knit5-Dec-07 18:45

jit_knit

5-Dec-07 18:45

I just want to enumerate all the audio video devices installed on the machine.

Saving PowerpointSlide as Bitmap From a Win32 Api based Application

niloy5-Dec-07 18:20

niloy

5-Dec-07 18:20

Hi Everybody,

I have been trying to save a powerpoint slide from a win32 sdk application.

My Requirment is like this, From my application i need to open a powerpoint application using ole and then save the slides as bitmap .But this is not possible for me to use any mfc based application or active x control.

Can anybody please help me out in this case

Niloy

about pdf library.

keyto5-Dec-07 18:12

keyto

5-Dec-07 18:12

I want to do study about Pdf library. Can someone provide me the tutorial on Pdf library. Actually I need to study all the functions, read them what they do because I need to convert the bmp and text to pdf.

Re: about pdf library.

Hamid_RT5-Dec-07 18:29

Hamid_RT

5-Dec-07 18:29

See PDF Tutorial Downloads [^] and WHAT IS A PDF FILE?[^]

Re: about pdf library.

keyto5-Dec-07 19:05

keyto

5-Dec-07 19:05

Actually I wanted to study Internal working of the CPDFlib. The functions used in that library.

Fill CListCtrl with Images, about 20 images, performance problem

followait5-Dec-07 17:09

followait

5-Dec-07 17:09

Not too many images to add, about 20, I'm not sure if a thread is necesaay. Here is the piece of code, the performace is not good enough.
My CPU is P4 1.8G.

LPCITEMIDLIST pidl=SHBrowseForFolder(&bi);
if(::SHGetPathFromIDList(pidl,FindPath)) {
    _tcscat(FindPath,TEXT("\\*.jpg"));
    CFileFind ff;
    BOOL b=ff.FindFile(FindPath);
    while (b) {
        b=ff.FindNextFile();
        CString FilePath=ff.GetFilePath();
        WCHAR *w=FilePath.AllocSysString();
        Bitmap bm(w);
        ::SysFreeString(w);
        HBITMAP hBmp;
        bm.GetHBITMAP(Color::Black,&hBmp);
        Bitmap *pThumb=(Bitmap*)bm.GetThumbnailImage(60,45);
        pThumb->GetHBITMAP(Color::Black,&hBmp);
        CBitmap *pBmp=new CBitmap;
        pBmp->Attach(hBmp);
        int i=m_wndToolDlgBar.m_ImgList.Add(pBmp,RGB(0,0,0));
        m_wndToolDlgBar.m_piclist.InsertItem(0,ff.GetFileTitle(),i);
        delete pThumb;
        delete pBmp;
    }
}

Re: Fill CListCtrl with Images, about 20 images, performance problem

Hamid_RT5-Dec-07 18:28

Hamid_RT

5-Dec-07 18:28

Well whats the problem? does speed low?

Re: Fill CListCtrl with Images, about 20 images, performance problem

followait5-Dec-07 19:16

followait

5-Dec-07 19:16

Yes, it freezes until all images are added.

Re: Fill CListCtrl with Images, about 20 images, performance problem

Hamid_RT6-Dec-07 0:18

Hamid_RT

6-Dec-07 0:18

You can use of timer for this work.

Re: Fill CListCtrl with Images, about 20 images, performance problem

Naveen5-Dec-07 18:50

Naveen

5-Dec-07 18:50

followait wrote:
WCHAR *w=FilePath.AllocSysString(); Bitmap bm(w); ::SysFreeString(w); HBITMAP hBmp; bm.GetHBITMAP(Color::Black,&hBmp); Bitmap *pThumb=(Bitmap*)bm.GetThumbnailImage(60,45); pThumb->GetHBITMAP(Color::Black,&hBmp);

You can skip the above code if use the LoadImage() function instead of the GDI+ functions/classes

CString FilePath=ff.GetFilePath();<br />
HBITMAP hBitmap= (HBITMAP)LoadImage(....)<br />
CBitMap objBitmap( hBitmap );

nave

[OpenedFileFinder]

Re: Fill CListCtrl with Images, about 20 images, performance problem

followait5-Dec-07 19:15

followait

5-Dec-07 19:15

Not .bmp only.

Re: Fill CListCtrl with Images, about 20 images, performance problem

Hamid_RT6-Dec-07 0:18

Hamid_RT

6-Dec-07 0:18

If you dont need to jpg files and... and need to bmp you can use of LoadImage.

Re: Fill CListCtrl with Images, about 20 images, performance problem

ThatsAlok5-Dec-07 19:43

ThatsAlok

5-Dec-07 19:43

I am not sure, as i read you code, you seems first searching file and then updating the listctrl for every files, why don't you put all searched file in some datastructure and update teh list ctrl in single go instead of updating it for evry file and why there different handle for same image, you can use same handle for every image.

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow
Never mind - my own stupidity is the source of every "problem" - Mixture

cheers,
Alok Gupta
VC Forum Q&A :- I/IV
Support CRY- Child Relief and You/codeProject$$>

Re: Fill CListCtrl with Images, about 20 images, performance problem

followait5-Dec-07 21:36

followait

5-Dec-07 21:36

Every image is considered different from each other. So no different handles for the same image.

I consider the "Go ahead way" as a optimization.
Maybe it will be done later, maybe not.
Thanks for you advice.

Re: Fill CListCtrl with Images, about 20 images, performance problem

David Crow6-Dec-07 4:44

David Crow

6-Dec-07 4:44

It seems you are doing two things in the while() loop. Why not separate the "add images to list" and "add items to control" into two while() loop? If that is not feasible, then you might want to consider a secondary thread for this so that the UI remains responsive.

Another thing to try would be to call SetRedraw(FALSE) before the "add items to the list" code.

"Normal is getting dressed in clothes that you buy for work and driving through traffic in a car that you are still paying for, in order to get to the job you need to pay for the clothes and the car and the house you leave vacant all day so you can afford to live in it." - Ellen Goodman

"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

Re: Fill CListCtrl with Images, about 20 images, performance problem

followait7-Dec-07 4:32

followait

7-Dec-07 4:32

Because by seprating, the mapping of file and image is a little hard to find when I forgot the code.

SetRedraw(FALSE) might be a good try.

Thanks for you suggestion.

i have some question about api MOUSE event.

Jung Seng Won5-Dec-07 16:11

Jung Seng Won

5-Dec-07 16:11

this is part of my code.
and i am making some drawing line.
first, i put my left_mousebutton then point is displayed,
but the line don't draw~
it is good if i delete "WM_LBUTTONUP".
can you tell me why this happen?

HDC hdc;
PAINTSTRUCT ps;
static TCHAR str[200] ;
int len;
static int x = 100;
static int y = 100;
static bool b_start = false;

case WM_LBUTTONDOWN:
x = LOWORD(lParam);
y = HIWORD(lParam);
b_start = true;
return 0;

case WM_MOUSEMOVE:
if(b_start == true)
{
hdc = GetDC(hWnd);
MoveToEx(hdc, x, y, NULL);
x = LOWORD(lParam);
y = HIWORD(lParam);

LineTo(hdc, x, y);
ReleaseDC(hWnd, hdc);

}//b_start == true
case WM_LBUTTONUP:
b_start = false;
return 0;

}//iMessage
return (DefWindowProc(hWnd, iMessage, wParam, lParam));
}//LRESULT

Thank you everyone~

Re: i have some question about api MOUSE event.

followait5-Dec-07 17:20

followait

5-Dec-07 17:20

just debug

Re: i have some question about api MOUSE event.

Vince Rojas5-Dec-07 18:16

Vince Rojas

5-Dec-07 18:16

Perhaps you forgot to put a 'return 0':

case WM_MOUSEMOVE:
if(b_start == true)
{
hdc = GetDC(hWnd);
MoveToEx(hdc, x, y, NULL);
x = LOWORD(lParam);
y = HIWORD(lParam);

LineTo(hdc, x, y);
ReleaseDC(hWnd, hdc);

}//b_start == true

// <----------------------------------- H E R E

case WM_LBUTTONUP:
b_start = false;
return 0;
Only fools rush in. Foo!

Re: i have some question about api MOUSE event.

Jung Seng Won5-Dec-07 18:57

Jung Seng Won

5-Dec-07 18:57

it is working when i put return 0, ~
thank you~~

Thank you everyone~

using C++ to parse HTML

Tom Paronis5-Dec-07 13:43

Tom Paronis

5-Dec-07 13:43

Hello. I've been tasked with getting data off of a web page. Thanks to CodeProject I've made great strides, but I now seem to have hit an impasse. When I get to my URL I get the body of the document with the following code:

hr = pHTMLDocument2->get_body( &pElem );
if ( hr == S_OK && pElem != NULL )
{
pElem->get_innerText(&bstr);
CString strInnerText = bstr;
ScrapeFuturesSettlementData( strInnerText );
}

strInnerText has all of the data I need, but I can't break it down into specific rows and, what's worse (I've got a workaround for that issue) some of the data has no delimiter between entries, so I don't know where one entry begins and the other ends. Has anybody encountered anything similar? Thanks.
Tom Paronis

Re: using C++ to parse HTML

Hamid_RT5-Dec-07 18:34

Hamid_RT

5-Dec-07 18:34

Did you see my link on your previous question?(I think it was before December Wink | ;)

)

Re: using C++ to parse HTML

Tom Paronis6-Dec-07 3:11

Tom Paronis

6-Dec-07 3:11

Yes I did and it's what's gotten me as far as I am now. Thanks again! Now I'm trying to wrestle with a great mass of HTML data. Part of the problem is that I'm a HTML neophyte, but I think I'm getting pretty close to what I want. What I'm doing is sort of cumbersome C++ parsing and I was wondering if there was some easy way to just pluck the rows I want instead of iterating through the whole document. If there is I haven't found it yet, despite lots of searching.
Tom paronis

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.