C / C++ / MFC Discussion Boards

diehardii15-Jun-04 4:25

15-Jun-04 4:25

Hi everyone, I am writing text to the desktop. I create an hdc for the desktop using CreateDC("Display", NULL, NULL, NULL) and creating a Graphics object from that hdc. This works great for one monitor. However, I cannot get it to work on the second monitor. I can write text on half of one monitor and the other half is blank. I first tried just writing to the virtual desktop, figuring that Windows would take care of it (CreateDC("Display", NULL, NULL, NULL)), this doesn't work. Next I tried creating a DC for the second monitor from then monitors name (CreateDC(sz.name, NULL, NULL, NULL) and CreateDC(sz.name, sz.name, NULL, NULL)). I also tried directly passing the handles of the dc from the EnumMonitorsProc callback function. None of these works. I know that my coordinate system is correct, because I can create window on the second monitor using the same coordinates that don't work for text drawing. I have read everything in MSDN and I just can't get the text to output on the second monitor. Please help! Thanks for your time.

~Steve

Re: Problems with GDI+ on a second desktop

Blake Miller15-Jun-04 8:47

Blake Miller

15-Jun-04 8:47

Which version of Windows operating system are you on?

Did you try calling EnumDisplayDevices with this caveat "If an adapter has multiple monitors, to obtain information on all of them you must repeatedly call EnumDisplayDevices. Each time you call the function, set lpDevice to the adapter name and increment iDevNum. Note thatDISPLAY_DEVICE.DeviceName changes with each call for monitor information, so you must save the adapter name. The function fails when there are no more monitors for the adapter."

Smart Tags in Visual Studio Editor??

Boniolopez15-Jun-04 4:16

Boniolopez

15-Jun-04 4:16

Can somebody point me on an info, how to integrate smart tags into a visual studio editor?
Thanks,
Boni

High color icons for mfc application

Muhammad Asif Khan15-Jun-04 3:36

Muhammad Asif Khan

15-Jun-04 3:36

Hello every body
How to display a high color icon for an MFC application using VC6.0
e.g for and SDI application, MFC picks the IDR_MAINFRAME icon. If I inmport a high color icon for that resource, it inserts that icon as BITMAP resource instead of icon resource. VC6.0 allows maximum of 256 color icon insertion. How can i use high color icon for my application.

Thanx in advance.

Re: High color icons for mfc application

toxcct15-Jun-04 3:42

toxcct

15-Jun-04 3:42

you can import 32 bits icons, but you cannot edit them within visual C++ 6.
when you import an icon, take care also that you right selected the icon item in the list box !

TOXCCT >>> GEII power

Re: High color icons for mfc application

Muhammad Asif Khan15-Jun-04 22:49

Muhammad Asif Khan

15-Jun-04 22:49

First thanx for ur reply, but the problem is that MFC automaticaly picks the first icon resource as application icon, now when I import the high color icon in vc6, it import it as bitmap resource instead of an icon resource. how can i force vc to import it as icon, or how can i force vc to use the bitmap resource (an icon file) as application icon.

Re: High color icons for mfc application

toxcct15-Jun-04 23:03

toxcct

15-Jun-04 23:03

delete the icon IDR_MAINFRAME from the ressources.

then, reload (import) an icon.

don't forget to save between each actions...

i already saw that problem, but never an icon was loaded as a bitmap either Unsure | :~

cheers

TOXCCT >>> GEII power

Starter

Member 117484015-Jun-04 3:18

Member 1174840

15-Jun-04 3:18

I do some programming in VB, i want to learn C++ myself & then VC++ (on Microsoft VC++ only), if we refer any book for eg. "Mastering C++" the header files etc. given in the book are not found in "Microsoft VC++ Program" Pls. suggest the best book or any alternative solution

Thanks in Advance
Suresh Rose | [Rose]

Re: Starter

Marcel7215-Jun-04 3:25

Marcel72

15-Jun-04 3:25

Hi Sureshkh
I know a book which I find very good. It was very helpful when I started with VC++ coming from Pascal. There are good examples in it which gradually grow harder...
My book is in german but I'm sure there is an english version as well:

Inside Visual C++ 6.0
David Kruglinski / George Sheperd / Scot Wingo
Microsoft Press
ISBN 3-86063-461-5

Marcel Wink | ;)

Re: Starter

Anonymous15-Jun-04 13:31

Anonymous

15-Jun-04 13:31

If you're new to C++ I would recommmend reading "The C++ Programming Language" by Bjarne Stroustrup the original C++ implementor. Only after reading this book would I recommend moving onto "Programming Windows" by Charles Petzold. and/or "Programming Windows with MFC" by Jeff Prosise.

I would not recommend starting with "Programming Visual C++" especially if you're new to C++. This book specifically states in the Introduction that this book is for the professional programmer. This book also assumes you're already familiar with C/C++. There is no "so-called" C++ primer in this book. The book immediately jumps into dicussing MFC and assumes your're familiar with OOP principles in C++, which if you're not, only confuses things.

Regards,
John

Re: Starter

ThatsAlok16-Jun-04 1:31

ThatsAlok

16-Jun-04 1:31

hain buddy i think you live in india.
you can consult two book
1>Learn vc++ 21 days
2>Learn MFC c++ classess by shirley wodte
3>let us vc++
and for some good tutorail consult Codeproject.com Smile | :)

I Think It will Work
Alok Gupta
visit me at http://www.thisisalok.tk

How can CRecordset::Update provoke an exception?

Marcel7215-Jun-04 3:15

Marcel72

15-Jun-04 3:15

I would like to add a new dataset to a database. I make sure the database is open and that CanUpdate() is true.
Anyway, if the database is empty CRecordset::Update provokes an exception which can not be catched with an try-catch statement.
As soon the database contains at least one dataset, the addnew -> update works without trouble.

Thank you very much for your help!

<br />
m_pT_Schluesseltexte->AddNew();<br />
m_pT_Schluesseltexte->m_Edat_DeutscherText=CTime::GetCurrentTime();<br />
m_pT_Schluesseltexte->m_DeutscherText=DeutscherText;<br />
try<br />
{<br />
       m_pT_Schluesseltexte->Update();<br />
}<br />
       catch(CDBException* e)	<br />
{<br />
       AfxMessageBox("Item could not be added:\n"+e->m_strError,MB_OKCANCEL);<br />
}<br />
</small>

How to add header file or .cpp file?

Rajesh_K_Sharma15-Jun-04 2:30

Rajesh_K_Sharma

15-Jun-04 2:30

Hi I am new in MFC.
I made a function.
I would like to create new header file which contains function definition.How to add newly created header file in existing file?

rajesh

Re: How to add header file or .cpp file?

toxcct15-Jun-04 2:48

toxcct

15-Jun-04 2:48

click in the 'Project' menu item, and then, 'add new file'... select what file type you want...
if you are using MFC, you function could be inserted into a class. right click on the class name in the class viewer, then, click on 'add function'...

TOXCCT >>> GEII power

finding a file

Spiritofamerica15-Jun-04 2:17

Spiritofamerica

15-Jun-04 2:17

Hello, I am making a program that allows me to view the files from a remote computer. and I have succeded in doing this. But I also need a function that finds a file on that computer and returns the path to that file to me via winsock. How can I make such a function because I searched in the sdk and there doesn't seem to be one. SO I need a function that can find a file and store it's path in a string so that I can send it to my comp via winsock.

Thank you for your time.

please reply

Re: finding a file

David Crow15-Jun-04 3:05

David Crow

15-Jun-04 3:05

Aside from finding a file, are you familar with sending/receiving data through a socket? If not, perhaps a scan through some of the articles here will get you started.

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

Re: finding a file

Spiritofamerica15-Jun-04 7:36

Spiritofamerica

15-Jun-04 7:36

I am familiar with sockets I just want to find a file

Re: finding a file

David Crow15-Jun-04 7:40

David Crow

15-Jun-04 7:40

Didn't your first post state that "I am making a program...to view the files from a remote computer. and I have succeded in doing this?" If you are finding remote files and can send data via sockets, what's the issue(s)?

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

far -near pointer do they exist in our world

iwanttolearnc15-Jun-04 1:53

iwanttolearnc

15-Jun-04 1:53

i was under the notion that far pointer or near for that matter had faded into oblivion with the arrival of FLAT MEMORY windows 9x.
but recently while going through some source code namely winsock.h and winsock2.h i saw it had plenty of far pointers . gethostbyname() for example returns a far pointer to a struct.At the same time msdn tells that far pointers are obsolete. PLEASE comment

if u cant hack it race it or take it to bed then it aint worth having

Re: far -near pointer do they exist in our world

David Crow15-Jun-04 2:19

David Crow

15-Jun-04 2:19

You'll notice that the preprocessor resolves FAR to far and then resolves that to nothing. It is simply there for backward compatibility.

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

more trouble with far pointers

iwanttolearnc15-Jun-04 20:05

iwanttolearnc

15-Jun-04 20:05

hi david

u said FAR gets resolved to far and far into nothing
and this is for backward compactibility.

i tried using far pointers and got this error (VC++)

#include <stdio.h>
int main(void)
{

char far * a;
char s;
a =&s;
printf("%p\n",a);

}

error C4226: nonstandard extension used : 'far' is an obsolete keyword
if FAR is used instead there is no problem. i included windows.h

if far is obsolete keyword the how is FAR handled
windef.h does something like this
# define FAR far

so hows the resolution done

if u cant hack it race it or take it to bed then it aint worth having

Re: more trouble with far pointers

David Crow16-Jun-04 2:29

David Crow

16-Jun-04 2:29

iwanttolearnc wrote:
windef.h does something like this
# define FAR far

so hows the resolution done

You must've missed this statement a little earlier on in the same file:

#define far

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

Re: far -near pointer do they exist in our world

Ghazi H. Wadi15-Jun-04 2:26

Ghazi H. Wadi

15-Jun-04 2:26

Far and far are there for backward compatibility as Winsock.h is used for 16 bit and Winsock2 for both.
If you open windef.h you can look for the definition of FAR

It is Illogical to define an inventor by his invention

Webbrowser Control: How do I implement my own "Save Image As ..."?

Ickis15-Jun-04 1:46

Ickis

15-Jun-04 1:46

I implemented my own IID_IDocHostUIHandler because I needed my own ShowContextMenu method for my own context menu. By doing this I can recognize, if the user clicked on a link, text, image etc. and enable/disable several menuitems depending on the type of object I clicked on.
Now I want to implement my own "Save image as ..." method, but I have no clue how to get a reference to the picture I rightclicked.
Is there anybody out there who can help me? I searched with Google and the MSDN, but did not find anything.

Thanks a lot!

Marcus

Sending Message

Poorniselva14-Jun-04 23:59

Poorniselva

14-Jun-04 23:59

Hi,
I want to send a message from one application to another So i am using SendMessage().Now i want to send a string as parameter to the second application...If i am sending it as WPARAM in the second application its not being received as String value???How can i get it as String???

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