C / C++ / MFC

Re: SetActivePage for a property page

21-Jun-04 3:08

DanYELL wrote:
If the user clicks a button...

What does the button-click handler look like?

"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen

Blake Miller21-Jun-04 3:27

Blake Miller

21-Jun-04 3:27

Sometimes sending a message gets it into the queue a little too early.
You might also try

PostMessage(PSM_SETCURSEL, nPage);
return TRUE;

and see if the page switches successfully AFTER your button press is handled.

Re: SetActivePage for a property page

David Crow23-Jun-04 3:06

Dialog "Edit" control for HTML

23-Jun-04 3:06

Blake Miller wrote:
Sometimes sending a message gets it into the queue a little too early.

Sending a message bypasses the queue altogether and uses the windows procedure directly.

"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen

b_p_smith20-Jun-04 12:00

b_p_smith

20-Jun-04 12:00

I'm sure this must be easy, but I haven't hit upon the magic MSDN incantation to get what I want.

I have a simple ATL/MFC (VS.NET 2003) dialog. I want to put up the equivalent of a multiline edit control, but pass in HTML source, and have it displayed formatted.

I have no need to "edit" the HTML, or run any scripts, or any of that stuff. The HTML is stuff I generate which is mostly simple fonts/colors, etc. Right now I launch a browser passing in a temporary .HTM file, but I'd prefer to do this in a dialog (along with some other unrelated controls). The key is *simple*.

Can anybody point to some sample code that does this?

Thanx;
Brad.

Re: Dialog "Edit" control for HTML

Michael Dunn20-Jun-04 12:31

Michael Dunn

20-Jun-04 12:31

MFC has the CDHtmlDialog class which can show a web page.
Alternatively, you can use an ATL dialog with an embedded browser control, and show whatever HTML you want in there (such as a web page in an HTML resource).

For an example of the latter method, see WTL for MFC Programmers, Part VI - Hosting ActiveX Controls[^]

--Mike--
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Re: Dialog "Edit" control for HTML

b_p_smith20-Jun-04 12:42

b_p_smith

20-Jun-04 12:42

That was quick! Smile | :)

Thanks for the pointers. I'll play with both those and see what works best without a huge code overhead.

Brad.

Re: Dialog "Edit" control for HTML

David Crow21-Jun-04 3:11

21-Jun-04 3:11

Michael Dunn wrote:
MFC has the CDHtmlDialog class...

This must be a .NET-specific thing. Yes?

"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen

Dissalow a dir

gamitech20-Jun-04 10:27

gamitech

20-Jun-04 10:27

How can I make windows monitor a certain directory and not open it. To dissalow it and all of it's programs inside it!

gabby

Ryan Binns20-Jun-04 18:17

Ryan Binns

20-Jun-04 18:17

Why do you want to do this? Suspicious | :suss:

Ryan

"Punctuality is only a virtue for those who aren't smart enough to think of good excuses for being late" John Nichol "Point Of Impact"

gamitech22-Jun-04 13:43

gamitech

22-Jun-04 13:43

I want to build a firewall.
check the one I've done until now. It is on codeproject

gabby

David Crow21-Jun-04 3:12

21-Jun-04 3:12

Is the folder on an NTFS volume?

"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen

gamitech22-Jun-04 13:45

gamitech

22-Jun-04 13:45

yes it is on NTSF volume.
But if you can help me on FAT as well please tell me. I want to build a firewall.
Please if you want you can check the one I've poetd as article
I want a better one

gabby

David Crow23-Jun-04 3:02

DrawString and print preview

23-Jun-04 3:02

Check out MSDN articles Q279682 and Q285998 for examples. They are VB, but easy enough to port over to C++.

Here are a few C++ examples, too:

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/ad/ad/example_code_for_checking_for_a_control_access_right_in_an_ace.asp

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/ad/ad/example_code_for_setting_an_ace_on_a_directory_object.asp

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/ad/ad/example_code_for_setting_a_control_access_right_ace.asp

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/msmq/msmq_using_queue_security_850z.asp

"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen

Jorgen E.20-Jun-04 8:58

Jorgen E.

20-Jun-04 8:58

Hi,

I'm working on a MFC application with a CScrollView derived view class. Everything is working fine, except that when I use double buffering, the text comes out "blurry". I can't quite explain how it looks, but without double buffering, the text comes out as expected, but using double buffering, it kind of seems like everything is drawn twice, a pixel apart.... (I know it's not much of an explanation, but it's the best I got Roll eyes | :rolleyes:

)

Any ideas's on why this is happening? It's not happening with any other drawing that I'm doing...

Another thing I need some help on is the print preview:

The regular print seems to be working fine, but in the print preview, everything is scaled down, and is displayed basically without margins. This probably has a easy solution, but anyways.... Smile | :)

Thanks!

Edit: Forgot that some migth enjoy a bit of source code to go along with my first problem: Blush | :O

<br />
void CITPAXpertView::OnDraw(CDC* pDC)<br />
{<br />
	CITPAXpertDoc* pDoc = GetDocument();<br />
	ASSERT_VALID(pDoc);<br />
	if (!pDoc)<br />
		return;<br />
<br />
	// Kode for å tegne opp rapporten<br />
	int nWidth = GetDocument()->GetDocSize().cx;<br />
	int nHeight = GetDocument()->GetDocSize().cy;<br />
	Graphics graphics(pDC->m_hDC);<br />
<br />
	// Test for drawing with double buffering<br />
	#ifdef _DEBUG<br />
	#undef new<br />
		Bitmap* bmp = new Bitmap(nWidth,nHeight);<br />
	#define new DEBUG_NEW<br />
	#else<br />
		Bitmap* bmp = new Bitmap(nWidth,nHeight);<br />
	#endif<br />
<br />
	Graphics* graph = Graphics::FromImage(bmp);<br />
<br />
	CRect area;<br />
	area.SetRect( 0, 0, 100, 100); TextPrint(&graphics, 10, 0, area, "Hello!", 1); // Clean<br />
	area.SetRect( 100, 0, 200, 100); TextPrint(graph, 10, 0, area, "Hello!", 1); // "Blurry"<br />
<br />
	// Tegner til skjermen, og sletter minnet av bitmapen<br />
	graphics.DrawImage( bmp, 0, 0, nWidth, nHeight);<br />
	delete graph;<br />
	delete bmp;<br />
}<br />

The TextPrint is as follows:

<br />
void CITPAXpertView::TextPrint(Graphics* pdc, int height, REAL rotation, CRect area, CString text, int alignment, Color fargen)<br />
{<br />
	FontFamily fontFamily(L"Arial");<br />
	Font font(&fontFamily, (REAL)height, FontStyleRegular, UnitPixel);<br />
	RectF areal( (REAL)area.left, (REAL)area.top, (REAL)(area.right - area.left), (REAL)(area.bottom - area.top));<br />
	StringFormat stringFormat;<br />
<br />
	// Skriver all teksten i sort skrift<br />
	SolidBrush  solidBrush(fargen);<br />
<br />
	// Formaterer strengen med hensyn på høyre, venstre eller midtstilt justering<br />
	if (alignment == 0) { stringFormat.SetAlignment(StringAlignmentNear);	}<br />
	else if (alignment == 1) { stringFormat.SetAlignment(StringAlignmentCenter); }<br />
	else { stringFormat.SetAlignment(StringAlignmentFar); }<br />
<br />
	// Midtstiller teksten på linjene<br />
	stringFormat.SetLineAlignment(StringAlignmentCenter);<br />
<br />
	// Assuming the string 'text' contains our string to print<br />
	// Converts datatypes and prints the text<br />
	WCHAR*  tekst = new WCHAR[text.GetLength()+1];<br />
	mbstowcs(tekst, text, text.GetLength()+1);<br />
<br />
	// Skriver teksten til skjermen, og sletter den etterpå<br />
   if( rotation != 0 ) {<br />
	    // Må ta noen spesielle hensyn hvis vi skal rotere teksten noe som helst<br />
	    pdc->TranslateTransform(-areal.X-areal.Width/2, -areal.Y-areal.Height/2, MatrixOrderPrepend);<br />
		pdc->RotateTransform(-rotation, MatrixOrderAppend);<br />
		pdc->TranslateTransform(areal.X+areal.Width/2, areal.Y+areal.Height/2, MatrixOrderAppend);<br />
		pdc->DrawString(tekst, -1, &font, areal, &stringFormat, &solidBrush);<br />
		pdc->ResetTransform();<br />
   }<br />
   else {<br />
		pdc->DrawString(tekst, -1, &font, areal, &stringFormat, &solidBrush);<br />
   }<br />
<br />
	delete tekst;<br />
}<br />

I hope this helps, and maybe, just maybe, someone can help me out... D'Oh! | :doh:

Catching All Exception

AJ12320-Jun-04 5:15

AJ123

20-Jun-04 5:15

Hi there,

I am interested in catching all exceptions that could happen in my piece of MFC VC++ code. Up until now i have used been using Catch(CException *pException), but i noticed it doesn't catch divide by zero. To work around this someone recommended that I use Catch(...), is this best way for catching all exceptions. BTW what role does '...' play within C++? Never come across it before.

Thanks In Advance
Rich

Re: Catching All Exception

Michael Dunn20-Jun-04 5:51

Michael Dunn

20-Jun-04 5:51

... is just another token, like if or {. The only other place I can think of where it's used is in a function prototype:

int printf ( char* format, ... );

to mean any number of parameters.

--Mike--
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AfxGetApp in a DLL

MHillary20-Jun-04 4:32

MHillary

20-Jun-04 4:32

Hi,

I am trying to store a message dialog resource in a DLL so that I can use it in all my applications.
I have had a bit of success thanks to Johan Rosengren, so now I can store the dialog resource in the DLL and use it in my application.

The problem I am still having is when I try and call functions that are part of the MFC framework. Like GetAfxAppName() or any of the Registry Profile functions.

Is there any way I can get this methods to work inside the DLL? or is it just a lost cause Frown | :(

Thanks
Mark

Johan Rosengren20-Jun-04 4:53

Johan Rosengren

20-Jun-04 4:53

...
MHillary wrote:
thanks to Johan Rosengren

...and here I am again Smile | :)

Did you check AFX_MANAGE_STATE? You should do a search on MSDN (www.msdn.microsoft.com[^]) and read up on the subject, it's a bit long to quote verbatim.

MHillary20-Jun-04 5:02

MHillary

20-Jun-04 5:02

Hi,

I did, basicly what I've done is create a header file called Dialogs with simple C methods in it with names like ShowMessageDialog(...) ShowProgressDialog(...) etc In each one I've got AFX_MANAGE_STATE(GetStaticModuleState( )); Before I make any calles into MFC.

The problem that I found though is that switches everything over to the DLL, so when I call AfxGetApp() an assert is generated.

In the case of the Application Name I've called GetAfxAppName() before AFX_MANAGE_STATE and then passed that string to the dialogs constructor. But for things like the registy functions it just doesn't work.

Cheers
Mark

Johan Rosengren20-Jun-04 20:58

Johan Rosengren

20-Jun-04 20:58

Hm, I tested this:

__declspec( dllexport ) void Test()
{
  AFX_MANAGE_STATE(AfxGetStaticModuleState());
  CWinApp* p = AfxGetApp();
}

and I got the correct pointer to the app. You might also perhaps try passing in a pointer to the app (although it should be unecessary), try using a wrapper class for the registry - there is a ton of articles with registry-classes here Smile | :)