How to get keybord messages( such as"Alt +Shift"), when my app have not active window. - C / C++ / MFC Discussion Boards

Re: How can I change the Color of a Buttons Text?

SuperRon200319-Jan-04 19:39

SuperRon2003

19-Jan-04 19:39

Thats the way I tried first, but it dont´t work. I don´t know why.
I wrote the following Code:

HBRUSH CDialogProgKonf::OnCtlColor(CDC* pDC, CWnd* pWnd, UINT nCtlColor)
{
HBRUSH hbr = CDialog::OnCtlColor(pDC, pWnd, nCtlColor);

int nId = pWnd->GetDlgCtrlID();

if ( nId == IDOK) pDC->SetTextColor(RGB(255,1,2));

return hbr;

} // OnCtlColor

I don´t see me fault. It would be nice if anybody can help me. Thanks

Re: How can I change the Color of a Buttons Text?

vcplusplus19-Jan-04 23:27

vcplusplus

19-Jan-04 23:27

Did you read the example from Microsoft?
// This OnCtlColor handler will change the color of a static control
// with the ID of IDC_MYSTATIC. The code assumes that the CMyDialog
// class has an initialized and created CBrush member named m_brush.
// The control will be painted with red text and a background
// color of m_brush.

You need to return m_brush.

HBRUSH CDialogProgKonf::OnCtlColor(CDC* pDC, CWnd* pWnd, UINT nCtlColor)
{
    HBRUSH hbr = CDialog::OnCtlColor(pDC, pWnd, nCtlColor);

    int nId = pWnd->GetDlgCtrlID();

    if ( nId == IDOK)
    { 
       pDC->SetTextColor(RGB(255,1,2));
       
       // You can do this if you have not created a CBrush variable in
       // your code.
       CBrush m_brush;

       m_brush.CreateSolidBrush(RGB(255, 255, 255));  // White background
       or
       COLORREF crSys	= ::GetSysColor(COLOR_BTNFACE);
       m_brush.CreateSolidBrush(crSys);

       hbr = (HBRUSH)m_brush;
       m_brush.Detach();
    }
    return hbr;

} // OnCtlColor

Re: How can I change the Color of a Buttons Text?

SuperRon200320-Jan-04 1:42

SuperRon2003

20-Jan-04 1:42

I´m sorry to ask you again, but it doesn´t work. I put your Code in mine in both versions, but there is no change.
The button I want to change is a standard button in an dialog, both created with the Ressource-Editor of MS Visual C++ 6.0. Are there any properties I have to change? The ID of the button is IDOK. The Dialog-Class is CDialogProgKonf.

Thanks again! Confused | :confused:

Re: How can I change the Color of a Buttons Text?

vcplusplus20-Jan-04 8:34

vcplusplus

20-Jan-04 8:34

I have ran some test and you are correct that it is not working with buttons. I have been using it with a static text box and it has been working correctly. I will investigate a little deeper and let you know if I find something.

Also take a look at this web site

http://support.microsoft.com/default.aspx?scid=http://support.microsoft.com:80/support/kb/articles/q132/0/80.asp&NoWebContent=1

Re: How can I change the Color of a Buttons Text?

SuperRon200320-Jan-04 19:45

SuperRon2003

20-Jan-04 19:45

Thank you for your efforts. I´ll have a look on the web site you posted. If I find a way, I´ll lett you know.

Re: How can I change the Color of a Buttons Text?

vcplusplus21-Jan-04 3:42

vcplusplus

21-Jan-04 3:42

The only other way is to make it an "owner draw" button.

CMyDlg::OnDrawItem(int nIDCtl, LPDRAWITEMSTRUCT lpDrawItemStruct)
{
   if (nIDCtl == ID_MYBUTTON)
   {
       // Draw your button here
   }
}

Re: How can I change the Color of a Buttons Text?

SuperRon200321-Jan-04 4:56

SuperRon2003

21-Jan-04 4:56

Ok, that will take some time, because I have to find out how to draw an button myself. Dead | X|

Never mind, thank you for your friendly help. Cool | :cool:

How to get keybord messages( such as"Alt +Shift"), when my app have not active window.

Murad19-Jan-04 3:12

Murad

19-Jan-04 3:12

Hi All,

I have some application, which is running and have icon on system tray.
(Like Dictionary). How can I get the keybord messages like "Alt +Shift" or "Alt +Ctrl", when my window is not active ?
For example when I press "Ctrl +Insert+Insert" some dictionary applications
understand that message ( and they have not any active window )and translate the word.

Can you help me, if you know how to do that.

Thanks
Murad.

Re: How to get keybord messages( such as"Alt +Shift"), when my app have not active window.

Anonymous19-Jan-04 4:26

Anonymous

19-Jan-04 4:26

Hi Murad,
You can write hook application to monitor system wide key press. Following link might be of some help to you
http://www.codeproject.com/dll/keyboardhook.asp?target=hooks

Check out other hook articles on codeguru

Have fun,
Anunay

Re: How to get keybord messages( such as"Alt +Shift"), when my app have not active window.

anunay19-Jan-04 4:26

anunay

19-Jan-04 4:26

Re: How to get keybord messages( such as"Alt +Shift"), when my app have not active window.

Mike Dimmick19-Jan-04 5:17

Mike Dimmick

19-Jan-04 5:17

RegisterHotKey.

Re: How to get keybord messages( such as"Alt +Shift"), when my app have not active window.

Murad20-Jan-04 2:27

Murad

20-Jan-04 2:27

It works fine, Thank you!

Best Regards
Murad.

Read a DigetScale that is connected to Serial

Tiaan Strydom19-Jan-04 3:08

Tiaan Strydom

19-Jan-04 3:08

Hi My question is: MY program that i wrote is working fine it opens the serial and close it it works fine on a modem BUT when i connect it to the scale it works perfctly.. We have used pascal to do the reading but pascal do not work with windows Xp so have to code in MS visial c++6.

i want to send the scal a character 5 how do i do this in c++?? This is a sample of my pascal program.

PROGRAM SKALE;
USES
Dos, Crt;
CONST
CtrlE=#5; (THIS IS WHAT I WANT TO SEND A CTRLE TO READ THE STRING BACK TO ME!!)
VAR
poort, data: text; {Poort en leer veranderlikes}
junk, gewig: String; {Lees die gewig vanaf skale}
BEGIN
Assign(poort, 'COM1'); {Com2 word gelees vir data}
Assign(data, 'C:\SKALE\IN.TXT'); {Inbrug se data leer}
Rewrite(data);
Rewrite(poort);
Writeln(poort,CtrlE); {Vra skaal vir gewig}
Reset(poort);
Read(poort,junk);
Delay(1000);
Rewrite(poort);
Writeln(poort,CtrlE);
Reset(poort);
Read(poort,gewig); {Lees gewig}
Writeln('Lees ',junk,' vanaf skaal.');
Writeln(data, gewig); {Skryf gewig in leer}
Close(poort);
Close(data);
END. Sigh | :sigh:

Thank you
Tiaan Strydom

Re: Read a DigetScale that is connected to Serial

valikac19-Jan-04 6:32

valikac

19-Jan-04 6:32

Check out MSDN.

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnfiles/html/msdn_serial.asp

Kuphryn

64-bit compatibility

Vrushali519-Jan-04 2:50

Vrushali5

19-Jan-04 2:50

I am porting a 32-bit MFC application to 64-bit Windows.
I will be using Windows Server 2003 64-bit and Visual C++ .net 2003 Standard Win32 Edition .
1) Will there be a compatibility issue between these 2?
2) Does Visual C++ .net 2003 support 64-bit using the /WP64 switch? Does it have some extra/ other switches for 64-bit support?

Re: 64-bit compatibility

Mike Dimmick19-Jan-04 5:15

Mike Dimmick

19-Jan-04 5:15

MSDN information on 64-bit Windows[^].

64-bit applications at present can only be built using the compilers in the Driver Development Kit[^]. For the most part, Win64 is a pure extension of Win32 with some pointer and integer types extended to 64 bits. In terms of compatibility, you can run most IA-32 binaries on a 64-bit platform (albeit slowly at present on Itanium), but I don't think that's what you were after.

Visual C++ .NET 2003 uses version 13.10 of the x86 compiler, which supports the /wp64 64-bit portability warning switch. This switch detects conversions from types tagged __w64 to types smaller than 64 bits without this tag.

It should be possible to use the 64-bit compilers from VS.NET using a makefile project, or by changing the directories options. However, you won't be able to debug from VS.NET at present, as it only understands x86 native code. You'll have to use WinDBG, from the Microsoft Debugging Tools[^] kit.

CSplitter Windows

Sitaram Sukumar19-Jan-04 2:48

Sitaram Sukumar

19-Jan-04 2:48

I have written an application which has a splitter window (2 panes), I hvae written 2 different view Classes for these panes. In one view I have a List box and in the other I have a Dialog box with a few controls.
Now as I change the selection of items in the list box, I need to disable/ enable certain controls in the other pane. How do I communicate between the two panes

With Regards

Re: CSplitter Windows

David Crow19-Jan-04 4:31

David Crow

19-Jan-04 4:31

Each view should communicate with the other either by sending messages to the parent. Yes, one view could send a message directly to the other, but then those two views are now "tied" together.

A rich person is not the one who has the most, but the one that needs the least.

Re: CSplitter Windows

anunay19-Jan-04 4:34

anunay

19-Jan-04 4:34

Store pointer of these views as member variable in your CMainFrame class. Write some function which will return you these pointer. Use CMainFrame object to access these functions

How to show network machines from Browse button

mpb19-Jan-04 2:31

mpb

19-Jan-04 2:31

Hi All,

I want to show all machine names, present on the network, through Browse button.
The API NetQueryDisplayInformation() does not support Windows 98 and my application will run on Windows 98.
Does anybody can help me in this regard ?

Regards,
MPB

Hi,
Good site

Re: How to show network machines from Browse button

David Crow19-Jan-04 2:38

David Crow

19-Jan-04 2:38

See if WNetOpenEnum()/WNetEnumResource() will help.

A rich person is not the one who has the most, but the one that needs the least.

How to force a reboot

JaniOrca19-Jan-04 2:16

JaniOrca

19-Jan-04 2:16

Hi

I am writing an application in VC that has to automatically reboot itself (occasionally the vendors graphics drivers fail and the only way to resolve it is by rebooting)

How do I force a reboot in Window (2000 Pro) There seems to be a command for it in VB but I haven't found anything in VC

Thanks for any help

Re: How to force a reboot

David Crow19-Jan-04 2:17

David Crow

19-Jan-04 2:17

How about ExitWindows[Ex]()?

A rich person is not the one who has the most, but the one that needs the least.

Re: How to force a reboot

JaniOrca19-Jan-04 2:24

JaniOrca

19-Jan-04 2:24

Found it.

For anybody who cares, you call ExitWindowsEx to force a system shut down.

Re: How to force a reboot

vcplusplus19-Jan-04 4:00

vcplusplus

19-Jan-04 4:00

You must use AdjustTokenPrivileges for NT/2000/XP to use ExitWindowsEx(...).

I found this on the internet.

DWORD dwVersion = GetVersion();

if ( dwVersion < 0x80000000)
{
            // OS is NT/2000/XP
    HANDLE hToken;
    LUID tmpLuid;

    HANDLE handleProcess=GetCurrentProcess();

    if (!OpenProcessToken(handleProcess,TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken))
        return;

    if (!LookupPrivilegeValue(0,"SeShutdownPrivilege", &tmpLuid))
        return;

    TOKEN_PRIVILEGES NewState;
    LUID_AND_ATTRIBUTES luidattr;

    NewState.PrivilegeCount = 1;
    luidattr.Luid=tmpLuid;
    luidattr.Attributes=SE_PRIVILEGE_ENABLED;
    NewState.Privileges[0]=luidattr;

    if (!AdjustTokenPrivileges(hToken, false, &NewState, sizeof(TOKEN_PRIVILEGES), 0, 0))
        return;
}
ExitWindowsEx(...);

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