warning C4100 : how to get rid of it if issued by an included header ? - C / C++ / MFC Discussion Boards

How do you get a dialog to respond to a key down message?

D_code_writer20-Sep-06 22:19

20-Sep-06 22:19

Hey guys,

My name is Danny and I am working on a project using MFC based dialog and property pages. This question may sound really dumb, but I've added a key down handler for a property page I'm working on and for love or money I can't seem to get it to respond. I've thrown brake points everywhere and I can't get it to respond.

Are there any suggestions out there?

Thanks Guys.

Danny Nowlan

Re: How do you get a dialog to respond to a key down message?

Rinu_Raj20-Sep-06 22:36

Rinu_Raj

20-Sep-06 22:36

Map the WM_KEYDOWN message there you wil get which key is being pressed

Rinu Raj

Re: How do you get a dialog to respond to a key down message?

Hamid_RT21-Sep-06 8:15

Hamid_RT

21-Sep-06 8:15

See WM_KEYDOWN/WM_KEYUP

WhiteSky

What is the notification code that gets sent when a scrollbar event occurs?

skyapie20-Sep-06 22:11

skyapie

20-Sep-06 22:11

Hi,

I'm using the OnNotify(WPARAM wParam, LPARAM lParam, LRESULT* pResult) method to find out when a user uses a scrollbar. Except I'm not sure what to be checking lParam against. I've casted lParam to be a NMHDR*, but when I check the value of pNMHDR->code, it's usually 0xFFFFFFF4.

Can anyone tell me what xxxxx should be in the following line?

BOOL CBaseFormView::OnNotify(WPARAM wParam, LPARAM lParam, LRESULT* pResult) <br />
{<br />
	NMHDR* pNMHDR = (NMHDR*)lParam;<br />
	<br />
	if(pNMHDR->code == xxxxx)	<br />
	{<br />
		//Do stuff<br />
	}<br />
}

Or can someone tell me if I'm going about this the wrong way?

Thanks,
skyapie

Re: What is the notification code that gets sent when a scrollbar event occurs?

Rinu_Raj20-Sep-06 22:40

Rinu_Raj

20-Sep-06 22:40

You will get control at OnVScroll() OnHScroll() when the suer scrolls the scrol bar

Rinu Raj

Re: What is the notification code that gets sent when a scrollbar event occurs?

skyapie21-Sep-06 0:03

skyapie

21-Sep-06 0:03

That will work if the scrollbar is for the view, not for a list control or list box in the view...

Re: What is the notification code that gets sent when a scrollbar event occurs?

prasad_som20-Sep-06 22:46

prasad_som

20-Sep-06 22:46

skyapie wrote:
I'm using the OnNotify(WPARAM wParam, LPARAM lParam, LRESULT* pResult) method to find out when a user uses a scrollbar

If this scrollbar is of this view only then it will not send WM_NOTIFY message. Handle WM_VSCROLL message

skyapie wrote:
BOOL CBaseFormView::OnNotify(WPARAM wParam, LPARAM lParam, LRESULT* pResult)
{
NMHDR* pNMHDR = (NMHDR*)lParam;

if(pNMHDR->code == xxxxx)
{
//Do stuff
}
}

This code will work , if you want to handle scrolling of child window of this view, lets say scrolling in listcontrol present as child of this view.

Prasad
Notifier using ATL | Operator new[],delete[][^]

warning C4100 : how to get rid of it if issued by an included header ?

Jerome Conus20-Sep-06 21:37

Jerome Conus

20-Sep-06 21:37

Hi !

I'm compiling my project with warnings at level 3. I didn't change any warning-behavior with #pragma.

The problem is that I get many warning C4100 (unreferenced formal parameter) because of included headers. How can I get rid of these warnings for which I cannot do anything anyway ?

(btw : I've seen somewhere that warning C4100 is level 4, but it occurs at level 3, that's strange ! any hint about this ?)

Thanks for your help !
Jerome

Re: warning C4100 : how to get rid of it if issued by an included header ?

toxcct20-Sep-06 21:45

toxcct

20-Sep-06 21:45

does This[^] help ?

TOXCCT >>> GEII power

[VisualCalc 3.0 updated ][Flags Beginner's Guide new! ]

Re: warning C4100 : how to get rid of it if issued by an included header ?

Rinu_Raj20-Sep-06 21:45

Rinu_Raj

20-Sep-06 21:45

You just want to disable th ewarning right use #pragma

#pragma warning( disable: 4100 )

Is that not working ???

Rinu Raj

Re: warning C4100 : how to get rid of it if issued by an included header ?

Cedric Moonen20-Sep-06 22:02

Cedric Moonen

20-Sep-06 22:02

Which IDE are you using ? IF you use VC2005, there is an option in project properties that lets you disable specific warnings. Go in 'C/C++' -> 'Advanced' -> 'Disable specific warnings'. Put the warning number (without the 'C').

And don't know if this feature exists in VC6 (I already searched for it but couldn't find it). I don't know for VC2003 (never used it).

using pragma won't help I suppose because you probably don't want to modify these header files. And they probably don't include stdafx.h.

Cédric Moonen
Software developer

Charting control [Updated - v1.1]

Re: warning C4100 : how to get rid of it if issued by an included header ?

toxcct20-Sep-06 22:09

toxcct

20-Sep-06 22:09

Cedric Moonen wrote:
using pragma won't help I suppose because you probably don't want to modify these header files. And they probably don't include stdafx.h

but he can always do this :

#pragma warning(disable:4100)
#include "the_header.h"
#pragma warning(default:4100)

TOXCCT >>> GEII power

[VisualCalc 3.0 updated ][Flags Beginner's Guide new! ]

Re: warning C4100 : how to get rid of it if issued by an included header ?

Cedric Moonen20-Sep-06 22:12

Cedric Moonen

20-Sep-06 22:12

Sure. But if he needs to include that file in several places, this can be a pain...

Cédric Moonen
Software developer

Charting control [Updated - v1.1]

Changing the default color of splitter bar?

kiranin20-Sep-06 21:09

kiranin

20-Sep-06 21:09

How to remove or changing from the default color to required color of the splitterbar between two panes?

Re: Changing the default color of splitter bar?

Hamid_RT28-Sep-06 9:40

Hamid_RT

28-Sep-06 9:40

See here[^] maybe it is some helpful to you

WhiteSky

Re: Changing the default color of splitter bar?

kiranin29-Sep-06 1:41

kiranin

29-Sep-06 1:41

I didnt find any useful info there

Write Formated Data to STL-String

Mr.Brainley20-Sep-06 21:01

Mr.Brainley

20-Sep-06 21:01

Is there any equivalent to sprintf() & co. for STL-Strings ? I really don't want to use a buffer to work around that.

Re: Write Formated Data to STL-String

Mr.Brainley20-Sep-06 21:50

Mr.Brainley

20-Sep-06 21:50

For anyone who is interested, i found a good way. I use an ostringstream object to write my formated data to via standard stream operators. Then i use it's member function str() to return me a basic_string :

<br />
	string		teststring;<br />
	ostringstream	teststream;<br />
	unsigned int	testnumber = 1234;<br />
<br />
	teststream << "The Number is " << testnumber << " !!!!" << endl;<br />
<br />
	teststring = teststream.str();<br />
<br />
	cout << teststring;<br />

Re: Write Formated Data to STL-String

Rob Caldecott20-Sep-06 22:34

Rob Caldecott

20-Sep-06 22:34

Check out the Boost[^] library - it includes an excellent formatting class called boost::format.

Kicking squealing Gucci little piggy.

mouse click

viliam20-Sep-06 20:23

viliam

20-Sep-06 20:23

hi,
I am using keyboard to simulate mouse
GetCursorPos
SetCursorPos
function, and I'd like to ask
how can I simulate Click
(even into window doesn't belonging to my process)
thank you
Viliam

viliam

Re: mouse click

Christian Graus20-Sep-06 20:26

Christian Graus

20-Sep-06 20:26

SendMessage - you can send the click messages to the window.

Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog

Re: mouse click

viliam20-Sep-06 20:32

viliam

20-Sep-06 20:32

thankx I'll try
do you know how to find windows handle for current mouse position
(to send message to)
thank you

viliam

Re: mouse click

Christian Graus20-Sep-06 20:34

Christian Graus

20-Sep-06 20:34

WindowFromPoint[^]

Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog

Re: mouse click

Nibu babu thomas20-Sep-06 20:28

Nibu babu thomas

20-Sep-06 20:28

viliam wrote:
how can I simulate Click
(even into window doesn't belonging to my process)
thank you
Viliam

Use SendInput.

Nibu thomas
A Developer

Programming tips[^] My site[^]

Converting : String to Unicode

Mohammad Rastkar20-Sep-06 19:46

Mohammad Rastkar

20-Sep-06 19:46

For converting 'LPTSTR' to 'wchar_t *', we can use '_T()', Example :
MessageBox(_T("Some UniCode characters"));

Is there another way ? ... because I have wrote a long code and adding _T() to all strings is a little difficult! WTF | :WTF:

Thanks.

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