C / C++ / MFC

Capturing the numpad presses

4-Jan-02 4:25

ahh.....
Got it thanx for the information....

regards

Sonu

Re: DOC/VIEW...

Fazlul Kabir4-Jan-02 4:01

Fazlul Kabir

4-Jan-02 4:01

If you have command handlers in view, frame and documents, then the framework will call the one in view only. If there is no handler in your view class, then the framework will try to dispatch the command in your frame class.

This might be more clear if you look in the MFC source code (in "winfrm.h", MFC7), where the message is actually dispatched.

BOOL CFrameWnd::OnCmdMsg(UINT nID, int nCode, void* pExtra,
	AFX_CMDHANDLERINFO* pHandlerInfo)
{
	CPushRoutingFrame push(this);

	// pump through current view FIRST
	CView* pView = GetActiveView();
	if (pView != NULL && pView->OnCmdMsg(nID, nCode, pExtra, pHandlerInfo))
		return TRUE;

	// then pump through frame
	if (CWnd::OnCmdMsg(nID, nCode, pExtra, pHandlerInfo))
		return TRUE;

	// last but not least, pump through app
	CWinApp* pApp = AfxGetApp();
	if (pApp != NULL && pApp->OnCmdMsg(nID, nCode, pExtra, pHandlerInfo))
		return TRUE;

	return FALSE;
}

Hope this helps.

Regards.

// Fazlul

Get RadVC today! Play RAD in VC++
http://www.capitolsoft.com

Mark Donkers4-Jan-02 3:20

Mark Donkers

4-Jan-02 3:20

Hello again everyone, and Happy New Year.

I'm relatively new to VC++ so I'll try to explain this the best I can. Here's my situation... I have an SDI app where the MainFrm is CSplitterWnd'ed into several different views. I have one view that is a "keypad" (CView) with a bitmap that resembles a standard keyboard numpad. If the user presses any numpad buttons, I want that view to "see" and process those window messages. The following snippet is how I'm trying to do it, but it doesn't seem to receive any messages. What am I missing??

// ==================================================================
void CMainFrame::OnKeyDown(UINT nChar, UINT nRepCnt, UINT nFlags)
{
ASSERT( GetActiveDocument() );
CClocksterDoc* pDoc = static_cast<cclocksterdoc*>(GetActiveDocument());
int iQty = 0;

switch(nChar)
{
case VK_NUMPAD1: iQty = OES_KEY_01; break;
case VK_NUMPAD2: iQty = OES_KEY_02; break;
case VK_NUMPAD3: iQty = OES_KEY_03; break;
......
}
if( iQty > 0 )
{
pDoc->DoPurchaseRequest( iQty );
}
CFrameWnd::OnKeyDown(nChar, nRepCnt, nFlags);
}
// ==================================================================

I hope explained this well enough. Confused | :confused:

Thanks...

Make no little plans; they have no magic to stir your blood to action. Make big plans, aim high in work and hope
-- Daniel Burnham

4-Jan-02 3:40

It's the view that receives key-down messages and not your CFrameWnd derived window

Nish

p.s. from cafe. so anony post

Mark Donkers4-Jan-02 3:52

Mark Donkers

4-Jan-02 3:52

Thanks Nish. That works, but only when it has the focus. Is there a way to force the view to always receive the key-down message??

Thanks.

Make no little plans; they have no magic to stir your blood to action. Make big plans, aim high in work and hope
-- Daniel Burnham

AJ1234-Jan-02 13:08

AJ123

4-Jan-02 13:08

You maybe interested in system wide event hooks.

Lookup SetWindowsHookEx

Rickard Andersson²⁰5-Jan-02 2:39

Rickard Andersson²⁰

5-Jan-02 2:39

Just telling you that you have to do all hooks in a DLL if you want to catch when a key is pressed while your app is in no focus! Smile | :)

------------------------------
©0d3 ©®4©k3® - That's me! Smile | :)

------------------------------

Need help on ShellExecute Print verb

Mark Donkers7-Jan-02 3:24

Mark Donkers

7-Jan-02 3:24

Richard Jacko & Rickard Andersson & All,

First, thanks for the reply. I think I'm headed in the right direction.

Secondly, I'm very new to Windows programming so I'd like to apologize for my "Windows ignorance" Roll eyes | :rolleyes:

. Please bear with me...

From reading the docs on SetWindowsHookEx, I assume that I want to set the idHook = WH_KEYBOARD, right? Then, I have to write a DLL with a procedure that will handle the message (which I've never done).

Is this all correct? Confused | :confused:

Thanks.

Marcus

Make no little plans; they have no magic to stir your blood to action. Make big plans, aim high in work and hope
-- Daniel Burnham

James P4-Jan-02 2:33

James P

4-Jan-02 2:33

I have the following code that will attempt to print various files without the need of Print Previews etc.

temppath = patharray[0].Left(patharray[0].ReverseFind('\\')+1);
temppath += "ReportFiles\\My file.html";
ShellExecute(NULL, "print", temppath, NULL, NULL, NULL);
filestring.Format("Production sheet has been printed.", tempfile);
m_misc.InsertItem(12, filestring, 1); UpdateWindow();

However, when the print dialog appears I get the following error message appearing in a message box:-

"Cannot find the file 'D:\Test\ReportFiles\My file.html' (or one of its components). Make sure the path and filename are correct and that all required libraries are available."

Despit this message the file is found and prints OK!?!?! Is there any way to avoid this message from being shown.

Also, I would like to not have to show the print dialog box so that it will automatically print on completion of a task. Is there any way of doing this and also to print multiple copies of the report.

Any constructive suggestions would be greatly appreciated.

Cheers,

James Smile | :)

Re: Need help on ShellExecute Print verb

ColinDavies4-Jan-02 20:29

ColinDavies

4-Jan-02 20:29

Ok I'm going to take a couple of guesses Smile | :)

1.)
ShellExecute uses the default file association in your case "html" to open the document.
So in effect you are probably using your browser to print for you. And probably you are using IE4+ to do your dirty printing.
Check to see it's just not your PC that has this problem,
(Us coders are quite likely to abuse file associations on development boxes) Smile | :)

So maybe your code will run OK on a neighbours PC but not yours.
2.)
Consider changing your NULL paramaters to empty variants, And turn off the "Active_Dektop"
3.)
Try using OLECMDEXECOPT_DONTPROMPTUSER
as a paramater, I think its the third one ?
4.)
Make sure your Browser can actually print without errors ocurring.

Regardz
Colin J Davies
Sonork ID 100.9197:ColinI live in Bob's HungOut now
A good example of "Fully Managed" coding

Database

Sonu Kapoor4-Jan-02 1:41

4-Jan-02 1:41

Hi Guys,

i want create a app which is able to connect to a database. This database is placed on the server. How should i connect to that database: ADO or ODBC or something else. Once i used ODBC to connect to a database but after i tryed to open 4-5 tables at the same time the computer becomes was very slow to show the data...I want to avoid this in future, HOW ??? Which database should i use ? The database must be able to guarentee access for more than one user.

Thanx

Sonu

Carlos Antollini4-Jan-02 2:12

4-Jan-02 2:12

That depends of you want...
You can find several classes for use ADO.
Do You have experience making querys?
When you work with databases, don't need open the tables all time...
You need to open, read the data, display only that you want, Update, or insert records.
Never Keep the tables open.
A question more?
What Database are using you?

Best Regards.
Green Alien | [Alien]

Today is Friday!!!! Beer | [beer]

and Party!!!

Carlos Antollini.
Sonork ID 100.10529 cantollini

Sonu Kapoor4-Jan-02 2:45

4-Jan-02 2:45

Yes, i have experience in making querys. If i am working with databases, i always use the technique which you said, just open at the required moment, read and display....I am closing the tables always in the destructor. Shall i close the table after finishing with that table ???
I was using MsAccess, but this database allows only access for one user at a time.
Which Database Technique should i use ADO or ODBC or something else and which Database shall i use ??? Maybe MySQL ???

regards

Sonu

Carlos Antollini4-Jan-02 3:41

4-Jan-02 3:41

You can use Access for 5 or 8 users, without problems. But you need to open the database in Shared mode for several users can to open de database....
I think that is beter that use ADO, because is more easy to use that ODBC, The performance is similar. You can find a couple of classes of ADO or ODBC in CP...
I love to work with Databases..

Best Regards...
Green Alien | [Alien]

Today is Friday!!! Beer | [beer]

and Party!!!

Carlos Antollini.
Sonork ID 100.10529 cantollini

Sonu Kapoor4-Jan-02 4:11

4-Jan-02 4:11

I need a database which is able to gain access for more then 8 users. What do you think, which database should i use ? I am still thinking to work with MySql...Have you ever worked with MySQL related with VC++ ???

Thanx for your help

Best regards

Sonu

Carlos Antollini4-Jan-02 5:22

4-Jan-02 5:22

Yes I think that MySql is a good Idea, Is free, is not eavy, and is easy to use. Big Grin | :-D

In mysql.com you can download the ODBC drivers for access to MySql, for use it with ADO And also you can find the librarys and header for work with the MySql engine...
I used MySql only a little, because I work with SQL Server every day.
I found that MySql is a excelent option for a chepper Installation, and several users, more than 10, for example 20 o 30 users. Only You need a good PC for get a good performance over the Database...

Ask me that I can help you...

Best Regards and Good Luck...

Green Alien | [Alien]

Today is Friday!!! Beer | [beer]

and Party!!!

Carlos Antollini.
Sonork ID 100.10529 cantollini

Sonu Kapoor4-Jan-02 5:25

4-Jan-02 5:25

Great thanx for you offer. If i start, i will email you if i got some problems with the Project.

Best regards

Sonu

Hadi Rezaee4-Jan-02 7:19

Hadi Rezaee

4-Jan-02 7:19

Hi Mr.Carlos,
Can you tell me about MySQL ?
Is MySQL = SQL Server ?

My month article: Game programming by DirectX by Lan Mader.
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Hadi Rezaie

Jon Sagara4-Jan-02 7:34

Jon Sagara

4-Jan-02 7:34

MySQL is an open source rdbms. You can find a wealth of info on their website:

MySQL

Jon Sagara

What about ?

Carlos Antollini4-Jan-02 7:42

4-Jan-02 7:42

Mysql is a Rdbm.

Is MySQL = SQL Server ?
No, is from other Company : MySQL AB

MySql Supports ANSI SQL sintax.
Don't have Stored Procedures, triggers, but have all the power of most polular RDBMs and the most important: It's free.

Best Reagrds.
Green Alien | [Alien]

Today is Friday!!! Beer | [beer]

and Party!!!

Carlos Antollini.
Sonork ID 100.10529 cantollini

Carlos Antollini4-Jan-02 7:51

4-Jan-02 7:51

Hadi, I'm sorry MySql was Free Blush | :O

Now the cost of a license is 200 U$D

Best Reagards...
Green Alien | [Alien]

Today is Friday!!! Beer | [beer]

and Party!!!

Carlos Antollini.
Sonork ID 100.10529 cantollini

Carlos Antollini4-Jan-02 7:52

4-Jan-02 7:52

Hadi, I'm sorry MySql was Free Blush | :O

Now the cost of a license is 200 U$D

Best Reagards...
Green Alien | [Alien]

Today is Friday!!! Beer | [beer]

and Party!!!

Carlos Antollini.
Sonork ID 100.10529 cantollini

Jon Sagara4-Jan-02 8:00

Jon Sagara

4-Jan-02 8:00

It's free if you use the Unix/Linux version AND your app is freeware. As I understand it, if you want the Windows version, you have to buy a license regardless of whether you use it for freeware or not.

Licensing for MySQL

Jon Sagara

What about ?

Jon Sagara4-Jan-02 5:35

Jon Sagara

4-Jan-02 5:35

If transactions are important to you, then you should use PostgreSQL.

Jon Sagara

"There are lies, damned lies and statistics."
-- Mark Twain.