C / C++ / MFC

Shog⁹4-Jun-02 16:20

Shog⁹

4-Jun-02 16:20

Raffi wrote:
I have, it has no affect.

Odd...

I just checked MSDN, it gives this little tidbit:

To display a context menu for a notification icon, the current window must be the foreground window before the application calls TrackPopupMenu or TrackPopupMenuEx. Otherwise, the menu will not disappear when the user clicks outside of the menu or the window that created the menu (if it is visible). However, when the current window is the foreground window, the second time this menu is displayed, it displays and then immediately disappears. To correct this, you must force a task switch to the application that called TrackPopupMenu at some time in the near future. This is done by posting a benign message to the window or thread, as shown in the following code sample:

SetForegroundWindow(hDlg);

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

PostMessage(hDlg, WM_NULL, 0, 0);

Have you tried that?

--------

Life is fraught with opportunities to keep your mouth shut.

--Shog⁹ --

Steve L.4-Jun-02 16:17

Steve L.

4-Jun-02 16:17

Thats exactly the problem. Thanks for the fix. Smile | :)

-Raffi
Why do today what can be put of until tommorrow?

Michael Dunn4-Jun-02 16:17

Michael Dunn

4-Jun-02 16:17

That's a long-standing known bug with tray icon menus. See Q135788 for a fix.

--Mike--
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Nish Nishant4-Jun-02 17:22

Nish Nishant

4-Jun-02 17:22

Mike

I think this one should go in your C++ FAQ

Nish

Regards,
Nish
Native CPian.
Born and brought up on CP.
With the CP blood in him.

File Associations

Dor4-Jun-02 15:46

Dor

4-Jun-02 15:46

Does anybody know how to or even if you can register file associations in VC++.
for example,
when you double click on a .doc, it will open in word.
that kind of stuff, i know you can do it in InstallShield, but is there a way to do it in the code?
Cheers
Dor

Rama Krishna Vavilala4-Jun-02 16:04

4-Jun-02 16:04

Yes you can. You need to set certain registry keys. The details can be found in this link.

Rama Krishna Vavilala4-Jun-02 16:06

4-Jun-02 16:06

If you are using MFC you could look at CWinApp::RegisterShellFileTypes. You may even refer to the code of the function to figure out how it is done.

Dor4-Jun-02 16:11

Dor

4-Jun-02 16:11

thanks

Center text in a list box?

Alexandru Savescu4-Jun-02 21:35

Alexandru Savescu

4-Jun-02 21:35

If you create a MFC SDI or MDI application with the wizard, some time at step 4 (i'm not sure) you can click the advanced button and define custom file format for your application. Then the wizard will crete a REG file in the project directory. You can have a look at it and see how they do it.

Best regards,
Alexandru Savescu

Accelerator Keys

Anthony98874-Jun-02 14:23

Anthony9887

4-Jun-02 14:23

I have Added the accelerator keys to a dialog box. When I run the application I don't see the underline under the leter. Except when I hold down the ALT key then its displayed. I am running Windows 2000. I noticed it works fine under Windows ME. Anyone know how to enable this to show always at runtime.

Thanks

Re: Accelerator Keys

dazinith4-Jun-02 15:56

dazinith

4-Jun-02 15:56

this is an option in the OS itself.. go to control panel, display, effects tab, one of the check boxes says 'Hide keyboard navigation indicators until i use the Alt key'

so if they don't show its the settings

hope that helps Smile | :)

-dz

Re: Accelerator Keys

Anthony98875-Jun-02 3:14

Anthony9887

5-Jun-02 3:14

Thanks, do you know how to display the underline even though is disabled in the control panel. Just like in Word, its always displayed.

4-Jun-02 13:17

Can I center text in a Listbox? I know I can choose left or right, but what about center?

I'm not using MFC by the way Wink | ;)

Thanks for any reply

Re: Center text in a list box?

Rickard Andersson²⁰4-Jun-02 21:05

Rickard Andersson²⁰

4-Jun-02 21:05

Make it owner-draw!
I don't know excactly in Win32 API but you have to make it owner-draw! Smile | :)

Rickard Andersson@Suza Computing
C# and C++ programmer from SWEDEN!
UIN: 50302279
E-Mail: nikado@pc.nu
Speciality: I love C# and C++!

ASCII Code

Frank Deo4-Jun-02 12:18

Frank Deo

4-Jun-02 12:18

Hello People,

Is there an equivelant function in C++ (or c) to the Visual Basic Function "Asc".

For example, converting a given character to its ASCII code?

In VB: integer = Asc("A")

Thanks,
Frank

Re: ASCII Code

redeemer4-Jun-02 12:47

redeemer

4-Jun-02 12:47

int hello = (char)'a';

In C++ you can do mathematical operations on chars, you can say

char b = 123

char b = 'a'

Re: ASCII Code

Frank Deo4-Jun-02 13:52

Frank Deo

4-Jun-02 13:52

Cool, thanks! Smile | :)

Frank

VC project common folder

4-Jun-02 11:47

Just curious...what kind of projects have a "common" folder? if you want to include some static libraries with your project, how do you include them? I amlooking at my project and I don't see a "common" folder, yet that's where it appears that I should be putting my stuff...

any ideas?

Re: VC project common folder

C^hris L^osinger4-Jun-02 11:47

C^hris L^osinger

4-Jun-02 11:47

i put each static lib in its own folder. that way, i can get to it from any workspace/project that needs to.

-c

Cheap oil. It's worth it!

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Re: VC project common folder

4-Jun-02 12:13

What does it mean when you try to link to a static library and you get this error:

LINK : warning LNK4098: defaultlib "MSVCRTD" conflicts with use of other libs; use /NODEFAULTLIB:library
Debug/test.ocx : fatal error LNK1169: one or more multiply defined symbols found

Re: VC project common folder

John M. Drescher4-Jun-02 15:19

John M. Drescher

4-Jun-02 15:19

It means that you are linking your code with MSVCRTD and some other version of the c++ libraries that define the same functions. To get around this Open the link tab of the project settings for your executable and select the input category and then put MSVCRTD in the Ignore libraries edit box.

John

compiler independant __declspec(dllexport)

Joel Holdsworth4-Jun-02 11:18

Joel Holdsworth

4-Jun-02 11:18

Hi,
I'm making a dll which needs to export classes, but as this is going to be used to make compiler independant extensions, I would like to keep the code as platform independant possible, so does anyone know a way of doing this:

class __declspec(dllexport) CFoo

which would work on any compiler. __declspec(dllexport) according to the MS documentation seems to be microsoft specific. If possible I would like to keep away from writing into the .DEF file, but if I have to does anyone know how to do it right?

Thanks for your time...

England 1 : Sweden 1 Cry | :((

We don't stand a chance against Argentina!
Joel Holdsworth

Re: compiler independant __declspec(dllexport)

Rama Krishna Vavilala4-Jun-02 14:20

Re: compiler independant __declspec(dllexport)

4-Jun-02 14:20

#ifdef _MSC_VER
#if EXPORTING
#define DLLAPI __declspec(dllexport)
#else
#define DLLAPI __declspec(dllimport)
#endif
#else
#error "define a declspec for this compiler
#endif

class DLLAPI CFoo

This would be enough for you.

That being said. I think DEF file is much better way to export then using __declspec(dllexport). You should however use __declspec(dllimport) so that the linker optimizes the stub linkage.

Alexandru Savescu4-Jun-02 21:30

Alexandru Savescu

4-Jun-02 21:30

Rama Krishna wrote:
I think DEF file is much better way to export then using __declspec(dllexport).

How do you export an entire class then with a .DEF file?

Best regards,
Alexandru Savescu

Re: compiler independant __declspec(dllexport)

Rama Krishna Vavilala4-Jun-02 23:49