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Re: wm_create problems

super_matt28-Oct-03 9:00

super_matt

28-Oct-03 9:00

this is my create window method:

bool GLWindow::CreateGLWindow(HINSTANCE hInstance //this is hInstance passed by WinMain)
{
ofstream emsg ("ERROR.txt"); //this is where i have been putting my errors
GLuint PixelFormat;
DWORD dwExStyle;
DWORD dwStyle;
RECT WindowRect;

WindowRect.left = (long)0;
WindowRect.right = (long)m_aResolution[0]; WindowRect.top = (long)0;
WindowRect.bottom = (long)m_aResolution[1];

m_hInstance = hInstance;
WNDCLASSEX l_wc =
{ sizeof(WNDCLASSEX),
CS_GLOBALCLASS | CS_HREDRAW | CS_VREDRAW | CS_OWNDC,
(WNDPROC) WndProc,
0,
0,
m_hInstance,
LoadIcon(NULL, IDI_WINLOGO),
LoadCursor(NULL, IDC_ARROW),
NULL,
NULL,
m_StrTitle,
LoadIcon(NULL, IDI_WINLOGO),
};

if (!RegisterClassEx(&l_wc))
{
emsg << GetLastError();
MessageBox(NULL,"Failed To Register The Window
Class.","ERROR",MB_OK|MB_ICONEXCLAMATION);
return FALSE;
}

/*********************************my class registers fine, no problem at all*********************/

dwExStyle=WS_EX_APPWINDOW | WS_EX_WINDOWEDGE;
dwStyle=WS_OVERLAPPEDWINDOW;

AdjustWindowRectEx(&WindowRect, dwStyle, FALSE, dwExStyle);

if (!(m_hWnd=CreateWindowEx(dwExStyle, m_StrTitle, m_StrTitle,
dwStyle |
WS_CLIPSIBLINGS | WS_CLIPCHILDREN,
0, 0, WindowRect.right-WindowRect.left,
WindowRect.bottom-WindowRect.top,
NULL,
NULL, m_hInstance, this)))
{
/*************************************************************************************************
this is where the failure is, but the error code that gets printed is zero (which is enumerated as ERROR_SUCCESS) which i don't get at all, i don't know if i am somehow getting the wrong error code or what!!
*************************************************************************************************/
emsg << GetLastError();
emsg.close();
this->KillGLWindow();
MessageBox(NULL,"Window Creation Error","ERROR",MB_OK|MB_ICONEXCLAMATION);
return false;
}

****NOTE: i nocked off the rest of the code because it works, and it doesn't do anything but take up a lot of space in this post.

Your help so far has been great, thank you for your continued support
-Matthew

Re: wm_create problems

Jason Henderson28-Oct-03 10:54

Jason Henderson

28-Oct-03 10:54

From the CreateWindowEx documentation:

This function typically fails for one of the following reasons:

*an invalid parameter value
*the system class was registered by a different module
*the WH_CBT hook is installed and returns a failure code
*the window procedure fails for WM_CREATE or WM_NCCREATE

Check your params and your wndproc.

"We have done so much in the last 2 years, and it doesn't happen by standing around with your finger in your ear, hoping everyone thinks that that's nice." - Donald Rumsfeld

Jason Henderson
blog

Re: wm_create problems

yndfcd27-Oct-03 16:55

yndfcd

27-Oct-03 16:55

Add this line to your code

wc.style = CS_GLOBAL;
//initial other fields

RegisterClassEx(&wc);

Re: wm_create problems

super_matt28-Oct-03 7:47

super_matt

28-Oct-03 7:47

CS_GLOBAL isn't a field in style, i can't set it to that, it tells me 'CS_GLOBAL': undeclared identifier
also, for some reason, i am being told that the paramter is incorrect when i try and register my class

Re: wm_create problems

yndfcd28-Oct-03 13:20

yndfcd

28-Oct-03 13:20

In fact it's CS_GLOBALCLASS,I've forgotten a word.
When you call CreateWindow or CreateWindowEx,the function will compare the hInstance you passed to it to the hInstance of the WNDCLASSEX hInstance field.
Set the style field to CS_GLOBALCLASS tells the function that it should not compare these two values.

CMonthCalCtrl returns wrong date

asierra27-Oct-03 7:56

asierra

27-Oct-03 7:56

Hello all,
I created a Month calendar control into my form, and I want to use it as a date picker, so when the user selects a date, I will fill other CEdit controls with the date selected.

But I realize that within MCN_SELECT, the value associated with my Calendar Control, gets the wrong date.

void CPlanmView::OnSelectMonthcalendar1(NMHDR* pNMHDR, LRESULT* pResult)
{
// Users Selects a Date, so MCN_SELECT triggers this.
// User selected October 31, 2003 but returns
// Feb,10,2004
*pResult = 0;
UpdateData();
m_DayPlm.Format("%d",m_CalendarVal.GetDay());
m_MonthPlm.Format("%d",m_CalendarVal.GetMonth());
m_YearPlm.Format("%d",m_CalendarVal.GetYear());
UpdateData(FALSE);
}

I have also seen the sample provided in the msdn, and it has the same problem, for this control.

Any Ideas on how to workaround this issue.

Best,
-Alfredo

Re: CMonthCalCtrl returns wrong date

asierra27-Oct-03 12:46

asierra

27-Oct-03 12:46

I just found the answer for this problem

Microsoft Knowledge Base Article - 235355

I post it here for reference in case somebody else has to deal with this.

The Microsoft article says this behaviour is by design, and SYSTEMTIME should be used instead of CTime class

Best,
Alfredo

Accounting Program

Santiago Su♦rez27-Oct-03 7:23

Santiago Su♦rez

27-Oct-03 7:23

I need an accounting program that is able to keep track of inventory, orders, account receivable and others.
I would need the ocde in order to create custom fit program.
Are this type of programs available including the source. What are my best alternatives?
Thank you

Don't EVER use the registry! Please

wogerdoger27-Oct-03 6:32

wogerdoger

27-Oct-03 6:32

Hi All.
Why does Windows need a registry ? (Or at least: Why does Windows let programmers stuff with it ?)
I can't see why any program settings can't be stored in a file within the directory that the app is installed to. It can just load that file and read what it is supposed to do each time it runs.
It amazes me that this practice is so common and even promoted (Even here on CP). If I want my computer to behave differently: I'll tell it...not some scumbag programmer who thinks they know better!
Maybe there is a need for a "Read-Only" Windows registry for windows settings to be passed to the program.
Anyone ? Discussion ?
(Quite a rant, but it didn't belong in the Lounge).
Cheers

If sex is a pain in the ass, then you are doing it all wrong!