Re: Button pops up!

From:
"John Carson" <jcarson_n_o_sp_am_@netspace.net.au>
Newsgroups:
microsoft.public.vc.language
Date:
Thu, 13 Jul 2006 14:19:40 +1000
Message-ID:
<O3W6bOjpGHA.3600@TK2MSFTNGP04.phx.gbl>
"Robby" <Robby@discussions.microsoft.com> wrote in message
news:5DF5B9A2-77BC-494D-9068-F81CEA5A9CEE@microsoft.com

Hello,

The weirdest thing and I don't know how I will explain this! None the
less I will try!

I have three (3) windows, and therefore it means I have 3 winProc's.

The first window is the main window with two(2) buttons which each
open their respective window. So, button#1 opens window #2 and
button #2 opens window #3. (Window#1 is the main window with the two
buttons!)

So when I open the 2nd window by clicking on the first button, you do
agree that some space on the second window is right above some
buttons of the main window right underneath.... right! (lets call
this space "space X"). So space X is the space that is on my second
window where it aligns directly with the space containing a button on
the opened main window right behind it.

If I click on space X in the 2nd window, nothing happens and that's
what we all expect right!

However, when I open the 3rd window and click on some of its space X,
well, the button from the underneath window, pops up in the top
window currently open. ???

I unfortunately have done a huge re-structuring of my code and
obviously, there is something I left out!

Does anyone have any I deas of what could be going on !

I cannot really post the whole program, but I can post some fragments
of code that are directly related to the window#3 stipulated above:

============================================Main
int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInnstance,
PSTR szCmdLine, int iCmdShow)
{

HWND hwnd;
MSG msg;
WNDCLASS wndclass;

wndclass.style = CS_HREDRAW |CS_VREDRAW;
wndclass.lpfnWndProc = WndProc;
wndclass.cbClsExtra = 0;
wndclass.cbWndExtra = 0;
wndclass.hInstance = hInstance;
wndclass.hIcon = LoadIcon (NULL, IDI_APPLICATION);
wndclass.hCursor = LoadCursor (NULL, IDC_ARROW);
wndclass.hbrBackground = (HBRUSH) GetStockObject(WHITE_BRUSH);
wndclass.lpszMenuName = NULL;
wndclass.lpszClassName = szMW_ClassName;

RegisterClass (&wndclass);

///////////////////////////////////////////////////////////////////////
//-CHILD WINDOW #1 //
//////////////////////////

wndclass.lpfnWndProc = WndProc_CW1;
wndclass.hIcon = LoadIcon (NULL, IDI_EXCLAMATION);
wndclass.hIcon = NULL;
wndclass.lpszClassName = szCW1_ClassName;

RegisterClass(&wndclass); //(RS232 Interface)

///////////////////////////////////////////////////////////////////////
//-CHILD WINDOW #2 //
//////////////////////////

//-CONFIGURATION
wndclass.lpfnWndProc = WndProc_CW2;
wndclass.hIcon = LoadIcon (NULL, IDI_EXCLAMATION);
wndclass.hIcon = NULL;
wndclass.lpszClassName = szCW2_ClassName;

RegisterClass(&wndclass); //Programming GUI

//CREATE MAIN WINDOW
hwnd = CreateWindow (szMW_ClassName,szMW_Name,
WS_OVERLAPPEDWINDOW ,
20, 20, 750, 550,NULL,NULL, hInstance, NULL);

ShowWindow(hwnd, iCmdShow);
UpdateWindow (hwnd);

while (GetMessage (&msg, NULL, 0, 0)) //Window's queue loop
{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
return (int) msg.wParam;
}

====================================================

//Next is the cpp file that opens Window #3
======================================WinProc
... other code ...

case WM_COMMAND:

//IF EXIT BUTTON CLICKED THEN EXIT APPLICATION
if (LOWORD(wParam) == WindowButtons[0].MW_btC_ID)
{
DestroyWindow(hwnd); //End application
}
//CREATE CHILD WINDOW #3 WHEN BUTTON #2 PRESSED
else if (LOWORD(wParam) == WindowButtons[2].MW_btC_ID)
hdCWdws[2] = CreateWindow(
szCW2_ClassName,szCW2_Name,
WS_CHILD | WS_CAPTION | WS_SYSMENU,
10, 10, 700, 450,hwnd,(HMENU)CW2_ID,
(HINSTANCE) GetWindowLong(hwnd,GWL_HINSTANCE),NULL);

//SHOW CHILD WINDOW #3
ShowWindow(hdCWdws[2],SW_SHOW);

... othe r code...
==================================================


The way to both post a good newsgroup question and to (possibly) solve the
problem yourself is to create a simplified example that exhibits the
problem. Accordingly, I sugggest you do the following.

1. Copy your entire project to a new directory (if it is a simple project
consisting of a single file, then you could equally just save that file
under a new name and replace the original file in the project with the new
one).

2. Cut out anything from the project that you suspect is inessential to the
problem. Always retain a backup in case you are wrong in that judgement, so
you can easily restore what you removed. If it turns out that removing
something unexpectedly removed the problem, that gives you a hint where to
look for the problem

3. When you have simplified the code as far as possible while still
preserving the problematic behaviour, then either you or someone here can
probably identify the problem quite quickly. Please note that the code MUST
be compileable.

The code that you have given above is not compilable and, as far as I can
see, there is nothing about it that would explain the symptoms you report.
That could be a lack of perceptiveness on my part, but more likely you have
not identified the problem code.

I suspect that the problem is some typo in your code that means you are
unintentionally doing something really weird.

--
John Carson

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