C / C++ / MFC

CPallini31-May-07 2:10

31-May-07 2:10

tom groezer wrote:
They become undocked form their place

The same happens to your postings... Big Grin | :-D

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

Hamid_RT31-May-07 2:47

Hamid_RT

31-May-07 2:47

WhiteSky

Rajesh R Subramanian31-May-07 3:10

Rajesh R Subramanian

31-May-07 3:10

Nobody can give you wiser advice than yourself. - Cicero

toxcct31-May-07 3:23

toxcct

31-May-07 3:23

[VisualCalc][Binary Guide][CommDialogs] | [Forums Guidelines]

IDE

tom groezer31-May-07 2:07

tom groezer

31-May-07 2:07

I have a problem with my IDE. Whenever I debug the application i see all the windows flowing over. They become undocked form their place.

toxcct31-May-07 2:14

toxcct

31-May-07 2:14

this is because the debugger has its own interface... by chance, it displays the same windows than those docked when you're righting your code, but it could be different also

ps: remove your duplicate message please

[VisualCalc][Binary Guide][CommDialogs] | [Forums Guidelines]

tom groezer31-May-07 2:31

tom groezer

31-May-07 2:31

How to get rid of it? Is there something to do with the settings?

toxcct31-May-07 2:34

toxcct

31-May-07 2:34

configure it once... for me, no problem with this...

[VisualCalc][Binary Guide][CommDialogs] | [Forums Guidelines]

jhwurmbach31-May-07 2:42

jhwurmbach

31-May-07 2:42

tom groezer wrote:
Whenever I debug the application i see all the windows flowing over.

Dock them.
Close VisualStudio.
Ope it again and the debugger remembers where you placed the windows.

I would have liked a possibility to fix the window-placement, but I have not found it anywhere.

Failure is not an option - it's built right in.

TrackPopupMenu

tom groezer31-May-07 1:45

tom groezer

31-May-07 1:45

According to the KB article Q135788 the below code is the correction action that is to be applied to have the TrackPopupMenu to behave accurately.
Could somebody explain the problem better and provide a deeper understanding?
What is the significance of sending WM_NULL message?

SetForegroundWindow(hDlg);

// Display the menu
TrackPopupMenu( hSubMenu,
TPM_RIGHTBUTTON,
pt.x,
pt.y,
0,
hDlg,
NULL);

PostMessage(hDlg, WM_NULL, 0, 0);

Re: TrackPopupMenu

Ravi Bhavnani31-May-07 2:13

Ravi Bhavnani

31-May-07 2:13

Posting the null message to the popup menu's owner window forces a task switch to the application that displayed the menu. WM_NULL is chosen as it's a benign message that doesn't do anything more than cause the task switch.

/ravi

This is your brain on Celcius
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Re: TrackPopupMenu

sps-itsec4631-May-07 2:18

sps-itsec46

31-May-07 2:18

if i understood your question correctly, the according KB article in MSDN describes why this workaround is necessary:

PRB: Menus for Notification Icons Do Not Work Correctly[^]

SYMPTOMS
...
When you display a context menu for a notification icon (see Shell_NotifyIcon),
clicking anywhere besides the menu or the window that created the menu
(if it is visible) doesn't cause the menu to disappear.
...

RESOLUTION
...
The second problem is caused by a problem with TrackPopupMenu. It is necessary
to force a task switch to the application that called TrackPopupMenu at some
time in the near future. This can be accomplished by posting a benign message
to the window or thread.
...

So the WM_NULL message is used to force a task switch to the calling app, so when you click outside the popup menu, the popup menu disappears correctly.

cheers,
mykel

OMM: "Let us be thankful we have commerce. Buy more. Buy more now. Buy. And be happy."

Change view of MDIFrame

baerten31-May-07 1:29

baerten

31-May-07 1:29

Hi everybody,

i already wrote a function which changes the view of a MDIFrame ( hide old view, show new view )
SetActiveView(New_View);

i add even a New_View->SetDlgCtrlID(AFX_IDW_PANE_FIRST);
and ::SetWindowLong(New_View->m_hWnd,GWL_ID,AFX_IDW_PANE_FIRST);

It works nearby perfect. Only if i minimize the frame.
The new view gets the OnSize-Message and the old view too ( 2 times)

So i've an effect of non-drawing on the new view.

I put a "if(isHidden) return;" in the OnSize-Handler of the old view ( isHidden is setted to TRUE during the view-changing ) which don't resolve the problem Frown | :(

Big thanks for help Smile | :)

Parallel Port

jswarts31-May-07 1:22

jswarts

31-May-07 1:22

I'm trying to write a program that will connect two computers with a parallel port, be able to send information from one and have the other receive it, and work in Visual C++. I've been researching other programs using the parallel port, and everything I have found is a different type of program (such as LEDs lighting up), won't compile in Visual C++, or is more advanced than I can understand. I attempted to modify the code from the article "How to use serial port to communicate between two computers" and I might have the receive part working, but I can't test it until I finish the other half. I honestly don't think I did it right, so if anyone has any tips or helpful comments, I'd greatly appreciate it.

Re: Parallel Port

Johpoke31-May-07 1:52

Johpoke

31-May-07 1:52

I recently got interested in something alike a while back too. the tricky thing is that in windows XP and maybe 2000 etc using windows itself to control the port is blocked, so you must use the dll InpOut32.dll (google it) and take a look at

http://www.logix4u.net/inpout32.htm

http://www.hytherion.com/beattidp/comput/pport.htm

If you still get stuck i can post some of my code when i come home.. (it was only for controling leds and and some inputs, but it may help..) (i controlled a small RC car using the arrow keys ^^ )

Smile | :)

//Johannes

Font size

garfield18531-May-07 0:35

31-May-07 0:35

Hi everybody.

I have noticed that some controls in Visual C++ allow to change their font size. Others don´t allow it, and it takes it from the size you set on the Dialog properties.

To change that, I have created my own font with the CFont class like this:

************************************

CFont m_fuente;
LOGFONT lf;
m_fuente.CreateStockObject(DEFAULT_GUI_FONT);
m_fuente.GetLogFont(&lf);
strcpy(lf.lfFaceName,"MS Sans Serif");
lf.lfWeight =700;

lf.lfHeigth =16;

m_fuente.DeleteObject();
m_fuente.CreateFontIndirect(&lf);

****************************************
My question is about the size. Using lf.lfHeigth = 20 will not make words bigger, it will just make the space around the word bigger (check it in a combo box, for example, increasing the lfheigth of a combo box would make the space between words bigger.

Does anybody know how to fix this? Thank you!!!

Time to come clean...

Vive y deja vivir / Live and let live

Javier

CPallini31-May-07 0:47

31-May-07 0:47

See the nHeight explanation here [^].
Smile | :)

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

garfield18531-May-07 0:51

31-May-07 0:51

I guess it is all about that line that I do not understand Poke tongue | ;-P

nHeight = -MulDiv(PointSize, GetDeviceCaps(hDC, LOGPIXELSY), 72);

Can you explain me what it means?

Thanks!

Time to come clean...

Vive y deja vivir / Live and let live

Javier

Hamid_RT31-May-07 1:32

Hamid_RT

31-May-07 1:32

This code is for convert of points to logical device coordinates.

WhiteSky

garfield18531-May-07 1:36

31-May-07 1:36

O_o

Aha...

So how do I say that I want the font size to be 20, for example? Poke tongue | ;-P

Time to come clean...

Vive y deja vivir / Live and let live

Javier

CPallini31-May-07 1:49

31-May-07 1:49

garfield185 wrote:
So how do I say that I want the font size to be 20, for example?

you have to set nHeight as follows:

nHeight = -MulDiv(20, GetDeviceCaps(hDC, LOGPIXELSY), 72);

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

CPallini31-May-07 1:43

31-May-07 1:43

garfield185 wrote:
I guess it is all about that line that I do not understand

You also have to be aware that the system matches your request again available fonts.

garfield185 wrote:
nHeight = -MulDiv(PointSize, GetDeviceCaps(hDC, LOGPIXELSY), 72);

Can you explain me what it means?

OK.
It simply states that nHeight isn't the pixel height of the font, but it is related with it by the factor
GetDeviceCaps(hDC, LOGPIXELSY)/72 that is system-dependant.

On my Laptop the factor is 1.33 meaning that I have to specify nHeight=27 (let's forget for the minus sign) to obtain a 20-point sized font (and nHeight=21 to obtain the 16-point one).

On your system maybe the difference between the requested font heights it's so small that the same font is choosen.

Hope that helps.
Smile | :)

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

garfield18531-May-07 3:22