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Hello,
In MDI project, i work with CHtmlView and i want to add scrollbar to my childs windows.
so i do :
BOOL CChildFrame::PreCreateWindow(CREATESTRUCT& cs)
{
cs.style = WS_VSCROLL | WS_HSCROLL |WS_OVERLAPPEDWINDOW;
m_HScroll.Create(SBS_BOTTOMALIGN ,CRect(0,0,0,0),this,ID_HSCROLL);
}
int CChildFrame::OnCreate(LPCREATESTRUCT lpCreateStruct)
{
m_HScroll.SetScrollRange(0,50,TRUE);
m_HScroll.SetScrollPos(0,TRUE);
}
When the prorgram start, i have scrollbars in my child window, greats !
I can detect :
void CChildFrame::OnHScroll(UINT nSBCode, UINT nPos, CScrollBar* pScrollBar)
void CChildFrame::OnVScroll(UINT nSBCode, UINT nPos, CScrollBar* pScrollBar)
but when i do a m_HScroll.SetScrollPos(10,TRUE); the ScrollBar don't move it is always in the left.
the user can use the scrollbar (it always stay in left position), i can detect when the user click on it and i can move my view, but i can't move my scrollbar.
if i do m_HScroll.SetScrollPos(10,TRUE); and int toto = m_HScroll.GetScrollPos()
toto == 10 !
but "at the screen" the scrollbar stay in the left.
Have you any idea ?
PS: excuse for bad english
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I think the problem is that m_hScroll isn't actually the scroll-bar that you see in the window. When you set the style (cs.style() in PreCreateWindow to WS_VSCROLL | WS_HSCROLL the window creates its own scrollbars, and you need to use the member functions of CWnd to access them.
For example, to get and set the position of the horizontal scroll-bar
void CChildFrame::some_function(int sb_pos)
{
SetScrollPos(SB_HORZ, sb_pos, TRUE);
int current_pos = GetScrollPos(SB_HORZ);
ASSERT(current_pos==sb_pos);
}
You'll also need to change your OnCreate function:
int CChildFrame::OnCreate(LPCREATESTRUCT lpCreateStruct)
{
SetScrollRange(SB_HORZ, 0, 50,TRUE);
SetScrollPos(SB_HORZ, 0,TRUE);
}
And take out the m_hScroll from your window.
Hope that helps (and I hope it's right too!)
"We are the knights who say Ni" (The Knights Who Say Ni)
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I have only one word to say thank !!!!
now I use the scrollbars which I see .
thx again
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Hello,
My question is simple:
How to blit a 8 bpp gray scale offscreen surface to a primary surface (currently 32 bpp RGB)?
When I blit these surfaces I get the error code: 0x80004001h = E_NOTIMPL = "The function called is not supported at this time"
I know that's a DirectX specific question but if anybody could help me... I will thank him all my life 
Hello World!!!
from Raphaël
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I want to add my toolbar and band to explorer. And if click the button of my toolbar, band is shown, and one more click, then band is hidden...
I find ShowBrowser() method, but this method has only show or hide, not toggle...
So, I must know band is shown or hide..
Band's state can change by not only my toolbar button but also menu in explorer...
What can I do in this case?????
@ P.S. I don't know my english can understand you..
Can't speak in English well.. -_-;;;
Thank you for reading, and Thank you very much for
responsing...
Hi
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Hi,
I have an imagelist which i have created using ILC_MASK | ILC_COLOR32 flags abd added XP alpha channel icons to it. The totally transparent section of the icon are fine but the section where it's suposed to be shadowed on the edges is black. Is there a way to solve this
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I want to Create a Frame/view/doc structure On a ActiveX Control,but It will be Found Memory leak! And I Found that the reasons is :
CDocManager* CDocManager::pStaticDocManager;
CPtrList* CDocManager::pStaticList;
How Can I avoid Memroy leak?
the Following is My Code :
BOOL Create()
{
if( m_pFrameWnd )
{
if( IsWindow(m_pFrameWnd->m_hWnd) ) return TRUE;
}
CSingleDocTemplate * pDocTemplate;
pDocTemplate = new CSingleDocTemplate(IDR_MAPTYPE,
RUNTIME_CLASS(CMapDoc),
RUNTIME_CLASS(CMapFrame),
RUNTIME_CLASS(CMapView));
CMapDoc * pDoc = new CMapDoc;
CCreateContext Context;
Context.m_pCurrentDoc = pDoc;
Context.m_pNewDocTemplate = pDocTemplate;
Context.m_pNewViewClass = RUNTIME_CLASS(CMapView);
Context.m_pLastView = NULL;
Context.m_pCurrentFrame = NULL;
CMapFrame * pFrameWnd = new CMapFrame;
m_pDoc = pDoc;
m_pFrameWnd = pFrameWnd;
m_pDocTemplate = pDocTemplate;
CRect rcMap;
GetClientRect(&rcMap);
BOOL ret = m_pFrameWnd->Create(AfxRegisterWndClass(CS_DBLCLKS), NULL, WS_CHILD|WS_VISIBLE, rcMap,this,NULL,&Context);
m_pFrameWnd->ShowWindow(SW_SHOW);
return ret;
}
ZHANGYIFEI
ZHANGYIFEI
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Solve the problem yourself: Trace every object you create and you find your leak.
(You even didn´t mentioned the leak  )
Try this @ home. (B&B)
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If nobody could answer it the first time, nobody can answer it after 5 times, 50 times, or 500 times. The only thing posting it more often will achieve is making everybody here less likely to read any of your questions in the future.
The only thing that might help us give you an answer is if you provide more information, not just repost the same thing. For example, which objects leak, what is the Create function a member of...
Oh, and learn what the <pre> tag does, it'll make reading your code a lot easier for the rest of us, and that might also help you get an answer. I promise you that spamming the board won't.
"We are the knights who say Ni" (The Knights Who Say Ni)
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Why, it's the simplicity of the problem. Do the easy things first rather than getting wrapped up in a complicated solution. I see two (2) operator new()'s, where are the corresponding delete's. You haven't discussed this. I assume the example code resides in an object. If you allocate memory off the heap you are responsible for freeing that memory, say in the object's destructor. Describe what you've done to resolve the problem, what objects are being leaked, where you try to release them, etc. There's not enough information to resolve your issue.
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I gave basicaly the same answer 2 days ago, on the 1st post (I think). If he cann't use that or the suggestion I gave him on my replay to his reply. Then forget it.
Trust in the code Luke. Yea right!
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the proplem look easy !but not, and not "new->delete" so easy!why don't try
it by yourself ,look what happen! the code i have offer! I have delete all,but Can't avoid leaks,the reason is MFC two static data member,and this two member is internal use!!
ZHANGYIFEI
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:(I've said before that this is not enough imformation for me to solve the problem. By the looks of things I would need the project, all any of us can do is make sugestions on possible solutions. The rest is up to you.
// These values are inialized in APPCORE.CPP
// If this is part of your code I am supprised
// you did not get a multiple definition errors.
CDocManager* CDocManager::pStaticDocManager;
CPtrList* CDocManager::pStaticList;
Complete list of source files associated with CDocManager:
AFXWIN.H, APPCODE.CPP, APPUI2.CPP, DLLINIT.CPP,
DOCMGR.CPP, DOCMULTI.CPP, DOCTEMPL.CPP
No one ever said debbuging was easy!
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CDocManager* CDocManager::pStaticDocManager;
CPtrList* CDocManager::pStaticList;
those two member is not in my code ,those in MFC code !
I said that those two member appear memory leak!
BOOL Create() //in ActiveX OnCreate Event perform this function!
{
if( m_pFrameWnd )
{
if( IsWindow(m_pFrameWnd->m_hWnd) ) return TRUE;
}
CSingleDocTemplate * pDocTemplate;
pDocTemplate = new CSingleDocTemplate(IDR_MAPTYPE,
RUNTIME_CLASS(CMapDoc),
RUNTIME_CLASS(CMapFrame),
RUNTIME_CLASS(CMapView));
// pDocTemplate in destructor function delete this!
CMapDoc * pDoc = new CMapDoc;// in destructor function delete this!
CCreateContext Context;
Context.m_pCurrentDoc = pDoc;
Context.m_pNewDocTemplate = pDocTemplate;
Context.m_pNewViewClass = RUNTIME_CLASS(CMapView);
Context.m_pLastView = NULL;
Context.m_pCurrentFrame = NULL;
CMapFrame * pFrameWnd = new CMapFrame;// in destructor function delete this!
m_pDoc = pDoc;
m_pFrameWnd = pFrameWnd;
m_pDocTemplate = pDocTemplate;
CRect rcMap;
GetClientRect(&rcMap);
BOOL ret = m_pFrameWnd->Create(AfxRegisterWndClass(CS_DBLCLKS), NULL, WS_CHILD|WS_VISIBLE, rcMap,this,NULL,&Context);
m_pFrameWnd->ShowWindow(SW_SHOW);
return ret;
}
//note :
CMapDoc inherit from COleDocument ；
CMapView inherit from CScrollView ；
CMainFrame inherit from CFrameWnd ；
I don't have CDocManager and it's derive class！
debug output ：
Detected memory leaks!
Dumping objects ->
plex.cpp(31) : {72} normal block at 0x01402F70, 124 bytes long.
Data: < @ > 00 00 00 00 00 00 00 00 00 00 00 00 00 11 40 01
doctempl.cpp(64) : {71} client block at 0x01401060, subtype 0, 32 bytes long.
a CDocManager object at $01401060, 32 bytes long
doctempl.cpp(62) : {70} client block at 0x014010B0, subtype 0, 28 bytes long.
a CPtrList object at $014010B0, 28 bytes long
ZHANGYIFEI
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Open appcore.cpp and look at CWinApp::~CWinApp(), this is where CDocManager::pStaticList and CDocManager::pStaticDocManager are deleted. Since CWinApp is not the base class for your project then these two pointers will not be deleted. Therefore, you must delete them your self. I beleive that the plex.cpp memory leak should go away when you fix the other two, because it is used to allocate storage for nodes and CDocManager uses a list of nodes used to store the docment template pointers.
Note also, that the list of memory leaks is the inverse of the order of allocations.
1) CPtrList is allocated.
2) CDocManager is allocated.
3) CPlex alloction occurs (CDocManager::pStaticList->AddTail(this)).
:-OThanks for the dump, it made the answer ovious where the problem was.
Blast I should have seen this earlier!!!
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I want to Create a Frame/view/doc structure On a ActiveX Control,but It will be Found Memory leak! And I Found that the reasons is :
CDocManager* CDocManager::pStaticDocManager;
CPtrList* CDocManager::pStaticList;
How Can I avoid Memroy leak?
the Following is My Code :
BOOL Create()
{
if( m_pFrameWnd )
{
if( IsWindow(m_pFrameWnd->m_hWnd) ) return TRUE;
}
CSingleDocTemplate * pDocTemplate;
pDocTemplate = new CSingleDocTemplate(IDR_MAPTYPE,
RUNTIME_CLASS(CMapDoc),
RUNTIME_CLASS(CMapFrame),
RUNTIME_CLASS(CMapView));
CMapDoc * pDoc = new CMapDoc;
CCreateContext Context;
Context.m_pCurrentDoc = pDoc;
Context.m_pNewDocTemplate = pDocTemplate;
Context.m_pNewViewClass = RUNTIME_CLASS(CMapView);
Context.m_pLastView = NULL;
Context.m_pCurrentFrame = NULL;
CMapFrame * pFrameWnd = new CMapFrame;
m_pDoc = pDoc;
m_pFrameWnd = pFrameWnd;
m_pDocTemplate = pDocTemplate;
CRect rcMap;
GetClientRect(&rcMap);
BOOL ret = m_pFrameWnd->Create(AfxRegisterWndClass(CS_DBLCLKS), NULL, WS_CHILD|WS_VISIBLE, rcMap,this,NULL,&Context);
m_pFrameWnd->ShowWindow(SW_SHOW);
return ret;
}
ZHANGYIFEI
ZHANGYIFEI
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Hi
I've got a CString text which i got to convert to a char[32]. Any easy solution for this?
Thanks
Jens
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Use this:
CString String = "Hello";<br />
char CharString[32];<br />
strcpy(CharString,String);<br />
CString has an overloaded operator LPCTSTR that automatically converts the CString into a char*!
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Or to be safer use strncpy instead:
<br />
<br />
#define MAXLEN 32;<br />
<br />
CString String = "This could be a very long string and we could get a buffer overrun :)";<br />
char CharString[MAXLEN];<br />
<br />
strncpy(CharString,String,(MAXLEN-1));<br />
<br />
CharString[MAXLEN-1] = '\0'; <br />
<br />
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Read the MSDN point CString operator (LPCSTR) and "strcpy".
Try this @ home. (B&B)
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ok thanks
Do you happen to know if there is a member function who allows to know the previous selection in a CTreeCtrl?
Greetings
Jes
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You get them as the oldItem when handling the TVN_SELCHANGING notification.
There is some info an an example in MSDN about it.
My opinions may have changed, but not the fact that I am right.
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can any body get me a module or source code of the software FONT CREATOR ... or FONTOGRAPHER ?
or source code similar to these softwares....which would take inputs of all the glyphs from eps files and finally convert them to true type font file.
--plz help me its regarding my job.
thanks
Aakash
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Hi Alvaro
GetTreeCtrl() didn't work for me, i tried it out like this:
CTreeCtrl* pTreeCtrl = (CTreeCtrl*) GetDlgItem(IDC_TREEVIEW);
HTREEITEM hItem = pTreeCtrl->GetSelectedItem();
CString strText = pTreeCtrl->GetItemText(hItem);
I now get the text correctly, thanks 
But now, i want to know with which kind of 'level' we are talking about: root, child or 'child of child'.
So i only want to perform some actions on a leaf.
Any1 any idea?
Greetings Jens
Never mind, i have filled for each tvitem structure the lParam with some user-defined data in it.
Greetings
Jens
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Hi.
I just wanna ask if you guys know how to run visual c++ executable files in OS/2? I think the problem is that it's 32-bit, while OS/2 is 16 bit.. Any ideas how to convert visual c++ output to 16-bit??
Thanks 
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