C / C++ / MFC Discussion Boards

HeapFree is very very slow

17-Nov-01 12:24

Why HeapFree() is slower then free() about 200 times in Windows98?
In Win2000 all right.

Changing dialog bar font (after creation)

User 988517-Nov-01 9:06

User 9885

17-Nov-01 9:06

The dialogs and dialog bars create the controls based on the selected font during creation. Is there any way to dynamically reposition/resize all controls and the dialogbar, when the font is changed?

I am now able to do it only before creation.

Thank you

Thomas

modified 29-Aug-18 21:01pm.

DIB_PAL_COLORS Question

AJ12317-Nov-01 7:04

AJ123

17-Nov-01 7:04

Hi,

I use the Video For Windows function AVIStreamGetFrame which returns a Packed DIB.

I then convert it to a DDB using the following code fragment:

HDC hDc=GetDC(NULL);

BITMAPINFOHEADER* bminfoheader;
BITMAPINFO* bminfo;
LPVOID bits;

bminfoheader=(BITMAPINFOHEADER*)lpbi;
bminfo=(BITMAPINFO*)lpbi;
bits = bminfoheader->biSize + (char *)lpbi;

HBITMAP hbitmap = CreateDIBitmap(hDc, bminfoheader, CBM_INIT, bits, bminfo, DIB_RGB_COLORS);

My concern is the colour usage parameter in createDIBitmap, could there be a situation where AVIStreamGetFrame returns a image which uses DIB_PAL_COLORS.

Would DIB_PAL_COLORS have any effect on calls to GetPixel and SetPixel, when the image is selected into a device context.

Thanks Again

Richard

show txt file

mazy17-Nov-01 6:34

mazy

17-Nov-01 6:34

I use createprocess() to execute "notepad" in my application.
I want to show .txt file in it.How can I do this?

Re: show txt file

Anders Molin17-Nov-01 6:41

Anders Molin

17-Nov-01 6:41

Depending on how you use CreateProcess() there's different ways to do it. In one of the parameters you write something like notepad.exe, just write notepad.exe c:\\test.txt or whatever you call your document then notepad should open it...

- Anders

Money talks, but all mine ever says is "Goodbye!"

Re: show txt file

mazy17-Nov-01 7:23

mazy

17-Nov-01 7:23

I used this code:

STARTUPINFO si;
PROCESS_INFORMATION pi;
memset (&si, 0, sizeof (STARTUPINFO));
memset (&pi, 0, sizeof (PROCESS_INFORMATION));
si.cb = sizeof (STARTUPINFO);
si.dwFlags = STARTF_USESHOWWINDOW | STARTF_USESTDHANDLES;
si.wShowWindow = SW_SHOW;

CreateProcess("c:\\WINDOWS\\notepad.exe c:\\My Documents\\test.txt",NULL,NULL,NULL,NULL,
CREATE_DEFAULT_ERROR_MODE,NULL,NULL,&si,&pi);

????It doesn't work?

Re: show txt file

Anders Molin17-Nov-01 9:31

Anders Molin

17-Nov-01 9:31

Try with CreateProcess("c:\\WINDOWS\\notepad.exe \"c:\\My Documents\\test.txt\"",NULL,NULL,NULL,NULL,
CREATE_DEFAULT_ERROR_MODE,NULL,NULL,&si,&pi);

- Anders

Money talks, but all mine ever says is "Goodbye!"

Re: show txt file

Carlos Antollini19-Nov-01 8:11

Carlos Antollini

19-Nov-01 8:11

You have problems with My Docuements, I found the solution converting to ShortPath.

You must to execute with C:\\windows\\notepad.exe C:\\My documents\\test.txt

But C:\\My documents\\test.txt must be used with short path, because the application found a space between My and Documents.
For convert use GetShortPathName(). Or put the test.txt field in other directory without spaces...

Best Regards

Carlos Antollini.

Re: show txt file

Michael Dunn17-Nov-01 9:06

Michael Dunn

17-Nov-01 9:06

Use ShellExecute() instead, which will automatically run the app associated with .TXT files.

--Mike--
http://home.inreach.com/mdunn/
#include "witty_sig.h"
Heart | [heart]

your

with

and

Re: show txt file

Bill Wilson19-Nov-01 8:04

Bill Wilson

19-Nov-01 8:04

You should be able to include the file name you want opened on the command line parameter (2nd argument in CreateProcess).

e.g. "notepad.exe c:\test.txt"

Hope this helps,
Bill

get a pointer to the document

sport17-Nov-01 5:25

sport

17-Nov-01 5:25

Help me please
I am not able to find my semantic error
I want a pointer to the document (MDI, Doc/View) in the application class.
I tried this way:
void CMyApp::OnFileNew()
{
CWinApp::OnFileNew();
CMainFrame *pFrame = (CMainFrame *)AfxGetMainWnd();
CMyDoc* pDoc = (CMyDoc*)pFrame->GetActiveDocument();
pDoc->SetModifiedFlag(); //Error: Access Violation!!!!!!!
}
Why is pDoc not a pointer to the active document??????

Any suggestion would be very appreciated
thanks in advance
regards
jens

[email]sport(at)web,de[/email]

Re: get a pointer to the document

Christian Skovdal Andersen17-Nov-01 5:57

Christian Skovdal Andersen

17-Nov-01 5:57

I have'nt tried the solution you suggest, and I don't know why it fails. But since the document has nothing to do with the frame class, you should obtain it from the Application class. Copy and paste this code into you CMyApp class:

CCommixDoc* CCommixApp::GetActiveDocument()
{
	POSITION pos = GetFirstDocTemplatePosition();
	ASSERT(pos);

	CDocTemplate* pTempl = GetNextDocTemplate(pos);
	ASSERT(pTempl);


	pos = pTempl->GetFirstDocPosition();
	ASSERT(pos);
	if (pos==NULL)
	{
		return NULL;
	}

	return (CCommixDoc *)pTempl->GetNextDoc(pos);

}

Christian Skovdal Andersen

"I have a plan so cunning you could put a tail
on it and call it a weasel." -Edmund, Blackadder III

Re: get a pointer to the document

sport17-Nov-01 9:21

sport

17-Nov-01 9:21

Hi christian
thanks a lot. I have tried your solution and it works in this case very good
My aim is to open several documents with the belonging childwindows depending on a loop in a global function. And fill the data member of the document class
When i try your solution in the global function:

CMyApp * pApp = (CMyApp *)AfxGetApp();
CMyDoc * pDoc = pApp->GetActiveDocument();

and try to fill the data member of the document class:

pDoc->m_data = x;

i get an error Frown | :-(

in your function GetActiveDocument() in the evaluation line:

ASSERT(pos);

Can you explain me this behavior?
What is my error in reasoning?

thanks in advance
regards
jens

Re: get a pointer to the document

Christian Skovdal Andersen17-Nov-01 23:39

Christian Skovdal Andersen

17-Nov-01 23:39

E-mail me a sample, that have the error, and I'll take a look at it.

Christian Skovdal Andersen

"I have a plan so cunning you could put a tail
on it and call it a weasel." -Edmund, Blackadder III

Re: get a pointer to the document

sport18-Nov-01 23:39

sport

18-Nov-01 23:39

Hi Christian,
thank you very much for your readiness to help me in this way!
As you can see below, I could solve my problems.
best wishes
jens

Re: get a pointer to the document

Christian Graus18-Nov-01 0:53

Christian Graus

18-Nov-01 0:53

If you have an MDI app you need to go
AfxGetApp()->MDIGetActive()->GetActiveView->GetDocument(); ( or possibly AfxGetApp()->MDIGetActive()->GetActiveDOcument();, but I'm not sure on that one ).

Christian

After all, there's nothing wrong with an elite as long as I'm allowed to be part of it!! - Mike Burston Oct 23, 2001

Re: get a pointer to the document

sport18-Nov-01 23:22

sport

18-Nov-01 23:22

Great! fantastic! excellent!
Thank you very mutch for your suggestion
It works fine.

Some small correction:
MDIGetActive() is not a element from derived CWinApp class (CMyApp), but CMDIFrameWnd::MDIGetActive. So I insert a pointer to the CMainFrame:

         CMainFrame* pmyFrame = (CMainFrame*)AfxGetMainWnd(); 
         ASSERT_VALID(pmyFrame);


//	CMyDoc * pmyDoc = (CMyDoc*) pmyFrame->MDIGetActive()->GetActiveView()->GetDocument(); it works too
	CMyDoc * pmyDoc = (CMyDoc*) pmyFrame->MDIGetActive()->GetActiveDocument(); 

	ASSERT_VALID(pmyDoc);

thank you
regards
jens

Re: get a pointer to the document

Tim Deveaux18-Nov-01 3:48

Tim Deveaux

18-Nov-01 3:48

HOWTO: Get Current CDocument or CView from Anywhere
Article ID: Q108587

werks fer me, eh... Smile | :)

Re: get a pointer to the document

sport18-Nov-01 23:25

sport

18-Nov-01 23:25

Hi Tim
Maybe I am blind.
How can I find this article?
thanks in advance
regards
jens

Re: get a pointer to the document

Tim Deveaux21-Nov-01 13:43

Tim Deveaux

21-Nov-01 13:43

This is a Miscosoft Knowledge Base (KB) article from the MSDN - if you don't have the MSDN Library installed, you can go to msdn.microsoft.com and search for the article (Q108587) number.

MS Flight Simulator modules...?

17-Nov-01 5:24

Does anyone know how can I writing addtional modules (DLL) to Microsoft Flight Simulator? In SDK isn't nothing about it ;-(

If You know, please tell me it...

Eml: piopawlu@interia.pl

SetWindowOrg() screws with my layers!

Simon Walton17-Nov-01 5:05

Simon Walton

17-Nov-01 5:05

I have some code that draws a filled rectangle with a CBrush and FillRect(), changes the window origin, and then continues to draw lines with a CPen. My problem is that the lines are being drawn behind the filled rectangle, and messing with the window origin with SetWindowOrg() seems to be doing it. Commenting out my call to SetWindowOrg() draws the lines on top.

Why is it doing this?

Simon
Hey, it looks like you're writing a letter!
Sonork ID 100.10024

Re: SetWindowOrg() screws with my layers!

Simon Walton18-Nov-01 4:30

Simon Walton

18-Nov-01 4:30

This has been resolved.

Simon
Hey, it looks like you're writing a letter!
Sonork ID 100.10024

Howto set background color on single char in CRichText?

17-Nov-01 2:16

Here is my code:
DWORD dwMask;
CHARFORMAT cf;

dwMask = m_wndChild.GetDefaultCharFormat(cf);
cf.dwMask = dwMask | CFM_COLOR ;
cf.dwEffects ^= CFE_AUTOCOLOR;

m_wndChild.SetWindowText(m_sTexto);

COLORREF Gris = RGB (192,192,192);
COLORREF Azul = RGB (20,20,200);
COLORREF Azul_Claro = RGB(50,50,255);
COLORREF Verde = RGB (0,255,0);
int Tamano_Array = m_arrPosicIluminar.GetSize();
for (int i=0; i < (Tamano_Array / 2);i++)
{
m_wndChild.SetSel(m_arrPosicIluminar[i*2],m_arrPosicIluminar[i*2+1]);
cf.crTextColor = Verde;
Confused | :confused:

// cf.crBackColor = Gris; //This is not possible

m_wndChild.SetSelectionCharFormat(cf);
}
m_wndChild.SetSel(-1,0);

Thanks in Advance.

Re: Howto set background color on single char in CRichText?

17-Nov-01 2:28

Sorry. I found the answer in a previous thread.

"You can set a background color for selected text using RichEdit 2.0 or later. Just pass CHARFORMAT2 structure to CRichEditCtrl::SetSelectionCharFormat and set crBackColor member to whatever you want."

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