C / C++ / MFC

How to completely suppress a window?

9-Oct-06 19:38

Im not sure did you need to GetPixel and SetPixel

WhiteSky

jipai7-Oct-06 20:48

jipai

7-Oct-06 20:48

Hi, I'm trying to completely suppress a window of another process, i.e. the main window doesn't display, doesn't appear at taskbar for even one second.
Imagine you are playing 3D game in full screen, suddenly a window appears and minimizes your game screen, and you die in the game...
I've tried using SetWindowsHookEx to install a hook for each WH_CALLWNDPROC and WH_CBT, then SetWindowLong to subclass the target window to modify every single call to WM_SHOWWINDOW, WM_SETFOCUS, WM_ACTIVATE, WM_ACTIVATEAPP, WM_WINDOWPOSCHANGING, etc. In addition, I also call LockSetForegroundWindow(LSFW_LOCK) and PostMessage(hWnd, WM_CLOSE, 0, 0) whenever possible.
In the subclass WindowProc, for every WM_WINDOWPOSCHANGING message, I modify the lParam, change the flags to SWP_HIDEWINDOW|SWP_NOACTIVATE|SWP_NOMOVE|SWP_ NOOWNERZORDER|SWP_NOREPOSITION|SWP_NOSENDCHANGING|SWP_NOSIZE|SWP_NOZORDER
For every WM_SHOWWINDOW and WM_ACTIVATEAPP message, I modify the wParam to FALSE.
So far, the window will appear for a brief split second then disappear. This is still not good enough for me because of that split second, it minimizes the active game screen.

Does anybody know what other message, or flag that I show be trying? Is what I'm trying to do possible at all?

Thanks much!

Re: How to completely suppress a window?

Mark Salsbery8-Oct-06 8:39

Mark Salsbery

8-Oct-06 8:39

Seriously? You have no control over the app that pops up this window???

CreateHardlink

zon_cpp7-Oct-06 20:45

zon_cpp

7-Oct-06 20:45

Hi!
what is the problem for calling the CreateHardlink function?
i call this function in my project but it has "undeclared identifier" error.
i define _WIN32_WINNT in .h and .cpp files, but it has this error, yet.

#define _WIN32_WINNT 0X0500<br />

what do i do?

Zo.Naderi-Iran

Hamid_RT7-Oct-06 21:26

7-Oct-06 21:26

I using CreateHardlink with #define _WIN32_WINNT 0X0500 and its compling without problem?where you declare #define

WhiteSky

zon_cpp7-Oct-06 22:14

zon_cpp

7-Oct-06 22:14

"#define _WIN32_WINNT 0X0500" is above ".cpp" file, what i call this function into it.

Zo.Naderi-Iran

Hamid_RT8-Oct-06 7:13

8-Oct-06 7:13

If you insert it to StdAfx.h what happens?

WhiteSky

A_Fa8-Oct-06 0:01

A_Fa

8-Oct-06 0:01

valla sharmanda . man ham hamin moshkelo daram va natonestam halesh konam !

zon_cpp10-Oct-06 23:16

zon_cpp

10-Oct-06 23:16

Hi!
i solve this problem:
in project properties, C/C++ option --> Command Line --> in "Additional options", you write: /D_WIN32_WINNT=0x0500
good luck Smile | :)

(Ooo yesterday)

Zo.Naderi-Iran

A_Fa8-Oct-06 0:12

A_Fa

8-Oct-06 0:12

See this :---> http://www.cygwin.com/ml/cygwin/2001-04/msg00779.html

A_Fa8-Oct-06 0:16

A_Fa

8-Oct-06 0:16

Use this sample at :---> http://www.totalcmd.net/download.php?id=CreateHardLink

Michael Dunn8-Oct-06 11:17

Michael Dunn

8-Oct-06 11:17

See the FAQ
2.2 I'm trying to call a Windows API, but the compiler gives an undeclared identifier error (C2065). Why?[^]

--Mike--
Visual C++ MVP Cool | :cool:

LINKS~! Ericahist | PimpFish | CP SearchBar v3.0 | C++ Forum FAQ

ContinueDebugEvent

samira forooghi7-Oct-06 19:34

samira forooghi

7-Oct-06 19:34

hi i want write an application that work as a debuger.
i set a breakpointb in exe with "DebugeBreakProcess" function then i use "ContinueDebugEvent" function , But
it can not countinue execution the exe.
if you have information abut it please help me.

Re: ContinueDebugEvent

Hamid_RT8-Oct-06 7:13

How to work with controls in MFC?

8-Oct-06 7:13

I think you can find your answer on www.Codeguru.com I think it has an article about exe files

WhiteSky

Lord Kixdemp7-Oct-06 19:11

7-Oct-06 19:11

Hello everybody!
I can't seem to find a reference on how the hell to do a simple operation like setting a control's "Enabled" to false... (ie, "gray" it out) In C# all you have to do is controlId.Enabled = false;, but MFC seems to handle things different... I'm being a complete n00b, but oh well... Poke tongue | ;-P

Thanks!

Windows Calculator told me I will die at 28. Frown | :(

Hamid_RT7-Oct-06 19:28

7-Oct-06 19:28

For disable or enable you can use EnableWindow but if you want to work with controls you can declare variables for them.For example use of a Button you can declare CButton m_Button; and then m_Button.Functions Is this your question?

WhiteSky

Lord Kixdemp7-Oct-06 20:12

7-Oct-06 20:12

Looks like just what I wanted Big Grin | :-D

, but it doesn't work... Frown | :(

It gives me an assertion error on file winocc.cpp:297... My code is as follows:

At the end of CMyDlg::OnInitDialog()
<code>
	// TODO: Add extra initialization here

	AfxMessageBox(_TEXT("Hey!"), 0, 0);

	m_makeKiller.SetDlgCtrlID(IDC_MAKE_KILLER);
	m_makeKiller.EnableWindow();
</code>

And the beginning of the class declaration:

<code>class CMyDlg : public CDialog
{
private:
		CButton m_makeKiller;</code>
...
<code>}</code>

What's wrong with that? I don't recall changing anything else except event handlers... Thanks! Wink | ;)

Windows Calculator told me I will die at 28. Frown | :(

Hamid_RT7-Oct-06 21:10

Re: How to work with controls in MFC? [modified]

7-Oct-06 21:10

CButton m_Button;
m_Button.Create("Button",WS_CHILD|WS_VISIBLE,CRect(0,0,100,23),this,1);
m_Button.EnableWindow(1);
Its working

How to create your button?

WhiteSky

Lord Kixdemp8-Oct-06 6:14

8-Oct-06 6:14

Hmm... Yeah, but how do I do that with the designer? Frown | :(

Thanks!

[edit]
Nevermind, this works! Big Grin | :-D

m_makeKiller = reinterpret_cast<CButton*>( GetDlgItem(IDC_MAKE_KILLER));
m_makeKiller->EnableWindow(0);

[/edit]

-- modified at 12:21 Sunday 8th October, 2006

Windows Calculator told me I will die at 28. Frown | :(

Hamid_RT8-Oct-06 7:14

8-Oct-06 7:14

Is your problem solving? Smile | :)

and if you have a variable for your button you can use form it

WhiteSky

Mark Salsbery8-Oct-06 8:47

Mark Salsbery

8-Oct-06 8:47

>>Yeah, but how do I do that with the designer?

If you want it disabled by default...

Highlight the control, press F4 for the properties window, and change the Disabled property to
TRUE.

Mark

Lord Kixdemp9-Oct-06 10:16

Change cursor image(Win 32 Application -Helloworld)

9-Oct-06 10:16

Alright! That solved it, thanks you two! Wink | ;-)

Windows Calculator told me I will die at 28. Frown | :(

TranQuangNhat7-Oct-06 19:01

TranQuangNhat

7-Oct-06 19:01

Please tell how to change the cursor when i move it into rectangle (100,100,200,200).
Thank you for helping

all for development

Re: Change cursor image(Win 32 Application -Helloworld)

Hamid_RT7-Oct-06 19:30