Enabling A Menu Button

[Sigma]

Does anyone know how to achieve VEOVEO like behavior? I ideal would like to check to see if a certain window is running, then if that window has focus, and if so, enable the buttons.

In a pseudo-code/C hybrid:

if((Window_Caption == "My window") && ("My Window" has focus)
{
Enables buttons
}

I have no idea what to even look for API wise in MSDN, so I'd take any hints/suggestions/pointers.

Thanks

[Killboy]

I've seen a patch for TMPGenc XPress.

The problem was, you had to reenable some kinda license.

However, the boxes for the 'serial' used to retrieve a trial lic by some server couldnt be changed.

This tool was meant to do exactly this, making them writable...

The most ridiculous about it was, that it crashed when you pulled the app above TMPGenc and hit 'Enable editboxes' LOL

Actually, I can't help you w/ your problem, sorry

// Searching MSDN for 'enable label' 'enable menu' did not help ?

[yamraaj]

Use EnableWindow

[Sigma]

//EDIT

Thanks yamraaj, i got it.

What is the best way (give you know the HWND of the window in question) to find a specific button?

Edited September 18, 2006 by Sigma

[revert]

I have done this once using the FindWindow and the EnumChildProc API.

void CLauncherDlg::OnBnClickedOk()
{
	CWnd* handle1 = NULL;	handle1 = FindWindow(NULL, "Some window");
	if(handle1)
	{
		EnumChildWindows(handle1->m_hWnd, EnumChildProc, 0);
	}
}BOOL CALLBACK EnumChildProc(HWND hwnd, LPARAM lParam)
{
	char szBuffer[100];
	int iResult = GetWindowText( hwnd, szBuffer, 100);
	CString sTest = szBuffer;
	if(sTest == "caption from button")
	{
			   // Your code here
	}
}

Hope it helps.

Good luck.

[revert]

Sh**t, I just noticed you are asking about a Menu Button.

The snipet I posted was to find the handle to a regular button, I'm not sure if it will help.

[Sigma]

Hey man, thanks for the code. I actually sorted it out same method tho! I couldn't get the menu button to work, so i'm just enabling the button. Ah well!

Cheers all

[proletsearch]

This thread is quite old, but I will post a quite old but working asm solution. It might help someone else It's not mine solution. Author notes below:

; Author: Deuce

; Enables all child windows belonging to the foreground window.

.386
.model flat,stdcallinclude \masm32\include\windows.inc
include \masm32\include\kernel32.inc
include \masm32\include\user32.inc
includelib \masm32\lib\kernel32.lib
includelib \masm32\lib\user32.libDlgProc proto :DWORD,:DWORD,:DWORD,:DWORD
EnableAll proto :DWORD, :DWORD.const
ENABLER					equ	 101
ICON					   equ	 102
IDC_HANDLE				 equ	 1002
IDC_ENABLE				 equ	 1001
TIMERID					equ	 WM_USER.data
template db '%lX',0
posBuffer db 10 dup (0).code
start:
	invoke	GetModuleHandle,NULL
	invoke	DialogBoxParam,eax,ENABLER,NULL,offset DlgProc,NULL
	invoke	ExitProcess,eaxDlgProc proc hWnd:HWND,uMsg:UINT,wParam:WPARAM,lParam:LPARAM	cmp	uMsg,WM_TIMER								  ;It's been 200 ms, enumerate the windows again!
	je	getPoint
	cmp	uMsg,WM_INITDIALOG							 ;Initialization stuff
	je	boxStart
	cmp	uMsg,WM_CLOSE
	je	boxClose  retFalse:
	mov	eax,FALSE
	ret  boxStart:
	invoke	SetTimer,hWnd,TIMERID,200,NULL				 ;Start up the timer for 200 ms intervals
	jmp	retTrue  boxClose:
	invoke	KillTimer,hWnd,TIMERID						 ;Okay we're done so shut everything down
	invoke	EndDialog,hWnd,NULL
	jmp	retTrue  getPoint:
	invoke	IsDlgButtonChecked,hWnd,IDC_ENABLE			 ;Are we activated?
	cmp	eax,BST_CHECKED
	jne	retTrue	invoke	GetForegroundWindow							;Yep, what window is activated?	push	eax
	invoke	wsprintf,offset posBuffer,offset template,eax  ;Translate handle value to ASCII
	invoke	SetDlgItemText,hWnd,IDC_HANDLE,offset posBuffer;Set the handle edit box
	pop	eax	invoke	EnumChildWindows,eax,offset EnableAll,NULL	 ;Now we are gonna filter through all child windows
  retTrue:
	mov	eax,TRUE
	retDlgProc endp
EnableAll proc hWnd:HWND,lParam:LPARAM						 ;Windows sends the handle of each child window here
	invoke	IsWindowEnabled,hWnd						   ;Is this child window enabled or not?
	cmp	eax,TRUE
	je	getNext	invoke	EnableWindow,hWnd,TRUE						 ;No, it's not! So we'll enable it :)
  getNext:
	mov	eax,TRUE									   ;Return TRUE to get handle of next child window
	ret
EnableAll endp
end	start