adding bitmaps to dialogbar buttons - C / C++ / MFC Discussion Boards

Ruslan28-Jan-02 11:19

28-Jan-02 11:19

I create C++ modeless dialog from an Active X control.

When an ActiveX control is the parent window of a modeless dialog box the TAB key, ToolTips don't work as expected.

The problem with the TAB key could be solved using ::SetWindowsHookEx function, though it is quite dangerous.

But I still can't enable tooltips.

Ruslan

CFile accessDenied

HomeNuke28-Jan-02 11:12

HomeNuke

28-Jan-02 11:12

I have been trying to resolve this problem all morning. I'm running WinXP and have VC++6 SP5 with the latest PSDK installed, and I don't know what I'm doing wrong. I am trying to dump into a buffer a HTML file but keep getting this error:

CFile exception: accessDenied, File Unknown, OS error information = 5.
First-chance exception in WebServer.exe (KERNEL32.DLL): 0xE06D7363: Microsoft C++ Exception.

I have tried stepping through it and looking at msdn.microsoft.com (what a joke) for the error message and the steps to resolve it but can't find anything. Here is a code snippet and let me know if I am doing something wrong.

CFile SendFile;


if (!SendFile.Open("c:\\wwwroot\\index.html", CFile::readOnly|CFile::shareDenyWrite|CFile::typeBinary))
	return -1;

	DataLeft=SendFile.GetLength();
	SendFile.Read(SendData, (UINT)DataLeft);

I have tried using the CFile Open method and the overloaded constructor to open this file and read it, but to no avail. It opens fine, but when reading in the document I get the exception noted above.

The error is thrown at the call to the Read method. Anyone know what's wrong? I am baffled and my brain is about to fry. This is part of a webserver I'm writing as a hobby project and one I'll post to the site when I can get bare minimums working Smile | :)

(that is if anyone is interested)

HomeNuke
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Re: CFile accessDenied

Philip Patrick28-Jan-02 11:19

Philip Patrick

28-Jan-02 11:19

Get rid from CFile::typeBinary. You cannot use it with CFile, only with derived classes

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

Re: CFile accessDenied

HomeNuke28-Jan-02 11:28

HomeNuke

28-Jan-02 11:28

ooops...hehe shows you how desperate I am.

This is one variation of code I was trying just to see if that was the problem because the error message was unknown file. I have removed and have tried it without the CFile::typeBinary but still get the same error.

Remember to remove 'I am stupid' code before submitting

HomeNuke
----
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Run your own PostNuke based web server from home
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Re: CFile accessDenied

Philip Patrick28-Jan-02 11:45

Philip Patrick

28-Jan-02 11:45

Hmm, try to set CFile::modeReadWrite and remove the share thingy, also did you check this on other files? That are not in the IIS web server directory? Check the Windows permissions of this folder also, sometimes IIS won't let "strangers" to touch its files Smile | :)

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

Re: CFile accessDenied

HomeNuke28-Jan-02 12:10

HomeNuke

28-Jan-02 12:10

OK this is weird...hard to explain but here is the new source code I used to get it to work, and thanks for your help, because I have tried your suggestions and you have responded really quickly. Also just to clarify things I just used wwwroot as a directory for web objects since this is a directory IIS and Apache use, I don't have either of them installed, I just created that directory.

But, enough of the rambling Smile | :)

Here is the new source code:

if (!SendFile.Open"c:\\wwwroot\\index.html",CFile::modeRead|CFile::shareDenyNone))
	return -1;

	DataLeft=SendFile.GetLength();
	SendFile.Read(SendData, (UINT)DataLeft);
	Start=0;

I change CFile::readOnly to CFile::modeRead...I'm looking up the docs now to figure out why this one works?!?! Maybe CF::readOnly is for an inherited class? But at least we where able to solve this.

Thanks for your help PHILIP!!!

HomeNuke
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Run your own PostNuke based web server from home
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Re: CFile accessDenied

Philip Patrick28-Jan-02 12:24

Philip Patrick

28-Jan-02 12:24

My bad

LOL, I didn't pay attention to this too, and this is funny Smile | :)

Well, CFile::readOnly is used.... for attribute of the file! Smile | :)

You know, like Hidden, ReadOnly, etc. Smile | :)

And the value of it is same as.... CFile::modeWrite!! LMAO, so at the end it is trying to read from file opened on;y for writing.

LMAO

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

adding bitmaps to dialogbar buttons

murd28-Jan-02 11:03

murd

28-Jan-02 11:03

Could some one please give some light on this for me.

i would like to add a bitmap to a button on a dialogbar, i know that i need to use the SetImage() on the variable of the button but the problem is that the bitmap will not show when the program runs.

i have tried placing the code on the OnCreate function located in the MainFrame just after the dialogbar is created and in the constructor of the dialogbar class, to no luck.

can someone please give me some help to place this code in the right place.

Re: adding bitmaps to dialogbar buttons

Fredrik Skog28-Jan-02 20:04

Fredrik Skog

28-Jan-02 20:04

Declare a CBitmapButton and then subclass the button you have in your dialog bar. Check out the CBitmapButton members SubclassDlgItem() and LoadBitmaps().
E.g.

CBitmapButton yourBitmapButton;
 
yourBitmapButton.SubclassDlgItem(IDC_YOUR_BUTTON, this);
yourBitmapButton.LoadBitmaps(_T("BUTTON_BMPN"), 
_T("BUTTON_BMPD"),
_T("BUTTON_BMPF"),
_T("BUTTON_BMPN"))

Cheers,

/Fredrik

Sonork ID: 100.11430:PhatBoy

Non-overlapping child windows in a non-SDI/MDI application..

28-Jan-02 10:38

I am having a problem with non-overlapping child windows in an application that is non SDI or MDI. I am able to create 2 child windows in the parent window.(very much like splitter windows, but I have not used splitter windows, since I have other problems with it). However, when I try to popup a dialog box, it goes into a "loop", trying to figureout which window is on top, and trying to send some message such as OnPaint()to it.

Thanks,
raghu

Handling image load in IE...

Philip Patrick28-Jan-02 10:03

Philip Patrick

28-Jan-02 10:03

..., how?
For example, I have a IWebBrowser2 control in my application, I want to replace some (read - any) image in HTML page with my image in memory.
I know, I can replace (load) HTML code itself from memory (using IStream), but what about images and other things (Flash, sounds - all should be same I guess)?
If someone knows the answer, or maybe a hint, place where to look and what to look for, please answer.

Thanx,

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

3D graphics prog. in visual C++ with openGL

Rajveer28-Jan-02 7:59

Rajveer

28-Jan-02 7:59

How do I read pixel data from a series of 2D images using openGL. I need to use the 2D slices to reconstruct a 3D model. Any suggestions on how to proceed?

Making an appwizard

Nnamdi Onyeyiri28-Jan-02 7:23

Nnamdi Onyeyiri

28-Jan-02 7:23

I have just finished making a dll that all my programs will lnk to, i want to make an appwizard so that the dll is automatically put into the same folder as the project, but when I went to create the appwizard, the option was not on the list (vc++6). I recently reformatted my C drive and installed vs.

I swear I could do that before. Confused | :confused:

==================================================
When Your Mind Wonders...Where Does It Go???

Re: Making an appwizard

Ernest Laurentin28-Jan-02 8:16

Ernest Laurentin

28-Jan-02 8:16

Did you re-install the Service Pack?

- Greatest invention : "The Microchip!"

Shell extension - problem when moving from 2000 to XP

28-Jan-02 6:52

Hi
I've written a shell extension that uses the undocumented features described by Henk Devos in his excellent article here on cp. I use ShellCreateFolderViewEx.

Everything is fine when 2000 is the os, but on XP, I must select entries with different heights in the tree control to force an update. If I select sibling items, nothing is updated. Anyone who has had this problem (and solved it)?

Enhance bitonal image to grayscale?

Thomas Ehardt28-Jan-02 6:31

Thomas Ehardt

28-Jan-02 6:31

I work with bitonal (TIFF g4) images on a daily basis.

I have seen products that will allow you to open a bitonal image and then "enhance" it by converting it (in memory) to grayscale.

Does anyone know how to go about doing this? I imagine that it isn't rocket science, but I don't feel like re-inventing the wheel if I don't have to!

THANKS!
Thomas

Re: Enhance bitonal image to grayscale?

PJ Arends28-Jan-02 9:56

PJ Arends

28-Jan-02 9:56

I don't know if this will help you, but I have a grayscale algorithm in my CPJAImage class (http://www.codeproject.com/useritems/pjaimage.asp). You may be able to modify it to suit your needs.

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Save a CBitmap to a bmp file

Guillaume F.28-Jan-02 6:17

Guillaume F.

28-Jan-02 6:17

Hi,
I need to save a CBitmap in a bmp file, how can I do this... I found how to do it with dib, but I never found how to do it from a CBitmap... Any help is welcome...
Thanks
Guillaume Frechette

Re: Save a CBitmap to a bmp file

Joaquín M López Muñoz28-Jan-02 6:27

Joaquín M López Muñoz

28-Jan-02 6:27

If you are comfortable with DIBs, use (for instance) Chris Maunder's DIBSection wrapper for Win32 and WinCE to construct DIBs from CBitmaps.

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo

developing web applications using c++

28-Jan-02 6:17

i'm sure c++ is very powerful, i would like to develop datadrive web applications using c++, is that possible? and would it be hard? i'm planning to use asp.net as my scripting language. instead of using C# or vb.net i would like to use c++. is there any refrence i could find out on the web?
thanks in advance.

Januola Likas Jun Blush | :O

Re: developing web applications using c++

Guillaume F.28-Jan-02 6:21

Guillaume F.

28-Jan-02 6:21

You can do it via an ISAPI... You can find more explanation on this site in Web/Script (ISAPI)... It's easy to start an ISAPI in Visual C++... In new project choose ISAPI Extension wizard... Good Luck

Re: developing web applications using c++

Joaquín M López Muñoz28-Jan-02 6:56

Joaquín M López Muñoz

28-Jan-02 6:56

As Guillaume pointed out, ISAPI is an option. Also, if you want to stay platform agnostic (ISAPI is mostly a Microsoft technology) you can always go for raw CGI. This spec is how all the dynamic content thing started some 10 years ago. Any CGI tutorial on the net should get you started. If you want some additional support for developing CGIs, search for CGI libraries (I've used in the past Stephen F. Booth's cgicc).

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo

Re: developing web applications using c++

Nemanja Trifunovic28-Jan-02 7:01

Nemanja Trifunovic

28-Jan-02 7:01

Of course, ISAPI is the way to go. On the other hand, you may want to try a new technology, called ATL Server (there is an article on it on CP). ATL Server is based on ISAPI, but it should ease the server-side programming.

I vote pro drink Beer | [beer]

Re: developing web applications using c++

Nnamdi Onyeyiri28-Jan-02 7:20

Nnamdi Onyeyiri

28-Jan-02 7:20

would ISAPI dll's run on the unix apache severs?

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When Your Mind Wonders...Where Does It Go???

Re: developing web applications using c++

Nemanja Trifunovic28-Jan-02 8:00

Nemanja Trifunovic

28-Jan-02 8:00

No. For Apache, you can develop modules in C/C++, but it seems to be a little more complicated than ISAPI.

I vote pro drink Beer | [beer]

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