Color selection - C / C++ / MFC Discussion Boards

Re: IE messenger button and excute messenger

Tcpip200513-Jun-06 15:04

Tcpip2005

13-Jun-06 15:04

Thank you.
if the plugin is a exe. I can just excute it.
but if the plugin is a dll component.
How could I know which interface to query?
because I only know the filename such as test.dll and the CLSID, I don't even know the IID_***.

MFC and web pages

_tasleem12-Jun-06 16:45

_tasleem

12-Jun-06 16:45

hi all
i want my VC++ application to post data to asp page, how to do that any class or any help.
or i want my application to talk to asp web page.

Tasleem Arif

Re: MFC and web pages

Ganesh_T12-Jun-06 19:00

Ganesh_T

12-Jun-06 19:00

You can use :

HINTERNET structure

Opening the internet Connection and inItialising WinInet function

Use the InternetOpen() function.

Now for postig and getting the data.
use: InternetOpenUrl() function

Before this Read the msdn for HINTERNET.

Cheers
"Peace of mind through Technology"

Re: MFC and web pages

Eytukan12-Jun-06 23:52

Eytukan

12-Jun-06 23:52

Make use the web browser(IE) activex control.

<marquee scrollamount="1" scrolldelay="1" direction="up" height="10" step="1">--[ Jig | [Dance]

]--

[My Current Status]

Re: MFC and web pages

ThatsAlok13-Jun-06 0:15

ThatsAlok

13-Jun-06 0:15

VuNic wrote:
Make use the web browser(IE) activex control.

Hum.......

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

cheers,
Alok Gupta
VC Forum Q&A :- I/ IV
Support CRY- Child Relief and You

Re: MFC and web pages

Eytukan13-Jun-06 0:58

Eytukan

13-Jun-06 0:58

Yes boss ! he he Big Grin | :-D

<marquee scrollamount="1" scrolldelay="1" direction="up" height="10" step="1">--[ Jig | [Dance]

]--

[My Current Status]

Re: MFC and web pages

ThatsAlok13-Jun-06 0:13

ThatsAlok

13-Jun-06 0:13

tasleem143 wrote:
i want my VC++ application to post data to asp page, how to do that any class or any help.
or i want my application to talk to asp web page.

use http://www.codeproject.com/internet/amhttputils.asp to post data t0 asp page!

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

cheers,
Alok Gupta
VC Forum Q&A :- I/ IV
Support CRY- Child Relief and You

Color selection

sidkraft12-Jun-06 16:14

sidkraft

12-Jun-06 16:14

I am trying to initialize a "brush" in visual C++ and then call it back and changing the colors of RGB. My statments for initialization are:
CFrame::CFrame()
{
...
...
...
colorbar.CreateSolidBrush(RGB(a,b,c));
...
...
}
void CFrame::OnPaint()
{
CPaintDC dc(this);
dc.TextOut (5,40,"Red Color Is:");
//Output color frame
COLORREF(RGB(a,b,c));
a = x;
CRect rc(100,150,150,200);
dc.FillSolidRect(&rc,RGB(a,250,250));
}

No matter what I try, the colors only get defined
at initialize time and never change. Are there functions
in MFC that allow one to change the colors after
initialization and what are they? Please let me know at sid_kraft@msn.com. Thanks in advance, Sid Kraft

Sid

Re: Color selection

Naveen12-Jun-06 17:39

Naveen

12-Jun-06 17:39

u can change the color of CBrush. u have to delete the previous brush before creating the new brush.

if( 0 != colorbar.m_hObject )
{
colorbar.DeleteObject();
}
colorbar.CreateSolidBrush(RGB(a,b,c));

nave

CString pointers

elephantstar12-Jun-06 15:30

elephantstar

12-Jun-06 15:30

I need to pass dereference a pointer so that I can obtain a CString. It seems to crash on the second function call. I think I'm not handling the deletion of the pointer correctly? What do you think? Thanks!

CString new_date;
BOOL new_date;

new_date = IsDate("4/5/07", &new_date);

int CDateTime::IsDate(CString datestr, CString * new_date_format)
{
CString month;
CString day;
CString year;

/* parse datestr */

CString revised_str = month + "/" + day + "/" + year;
*new_date_format = revised_str;
}

Re: CString pointers

Michael Dunn12-Jun-06 15:35

Michael Dunn

12-Jun-06 15:35

You have two variables called new_date - typo?

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

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VB > soccer

Re: CString pointers

elephantstar12-Jun-06 15:44

elephantstar

12-Jun-06 15:44

Yes. I meant to name it differently.

Re: CString pointers

valikac12-Jun-06 16:06

valikac

12-Jun-06 16:06

code good

add breakpoints what's second parameter at end function?

Kuphryn

Re: CString pointers

Jun Du12-Jun-06 16:57

Jun Du

12-Jun-06 16:57

Is it due to the local scope of revised_str?

- It's easier to make than to correct a mistake.

Re: CString pointers

ThatsAlok13-Jun-06 0:01

ThatsAlok

13-Jun-06 0:01

elephantstar wrote:
CString new_date;
BOOL new_date;

new_date

Is this compile successfully.. i doubt

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

cheers,
Alok Gupta
VC Forum Q&A :- I/ IV
Support CRY- Child Relief and You

Fonts [modified]

locoone12-Jun-06 14:09

locoone

12-Jun-06 14:09

can someone please tell me how to change a font for a control in a dialog.
im a beginner and lost.
and when you format a CString like
CString temp;
temp.Format("%d", whatever);
where can i find all of the letters like the %d and what each does?

-- modified at 20:11 Monday 12th June, 2006

Re: Fonts

Mark F.12-Jun-06 15:01

Mark F.

12-Jun-06 15:01

Locoone,

The following article describes changing the font.
http://support.microsoft.com/kb/q85518/

The format method for CString uses the same parameters as printf and sprintf. Here are the format specs:
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vccore98/HTML/_crt_format_specification_fields_.2d_.printf_and_wprintf_functions.asp

In your case the '%d' is the format for a integer value. For example:

<code>int whatever = 10;
temp.Format("whatever = %d", whatever);</code>

Now temp stores the formatted string "whatever = 10".

CString::Format()
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vcmfc98/html/_mfc_member_functions_cstring.asp

CString class:
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vcmfc98/html/_mfc_cstring_class_members.asp

This is pretty basic stuff. You should try to get a book on C++ and VC++ and MFC for beginners, and read through the MSDN (Microsoft Developer Network) help files. Get a grasp of the basics.

Mark

Re: Fonts

Laxman Auti12-Jun-06 19:24

Laxman Auti

12-Jun-06 19:24

See CreatePointFont API's

Knock out 't' from can't,
You can if you think you can
Cool | :cool:

Re: Fonts

ThatsAlok12-Jun-06 23:32

ThatsAlok

12-Jun-06 23:32

locoone wrote:
can someone please tell me how to change a font for a control in a dialog.

Create CFont Object and attach to the Control Window

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

cheers,
Alok Gupta
VC Forum Q&A :- I/ IV
Support CRY- Child Relief and You

unable to include cesync.h header

elautenticoperry12-Jun-06 10:09

elautenticoperry

12-Jun-06 10:09

Hi!
First of all, sorry for my poor English and my stupidity.

I've been attempting to include the header file "cesync.h" in a vs2005 project and I don't know how the hell I'm getting lots of errors such as:

error C2065: '_JBLEN': undeclared identifier (file stdlib.h)
and many others...

About the code, all I have to say is that it's a new project (from scratch) and the include has been added before any other line in the .h auto-generated code. Thanks.

-- modified at 16:10 Monday 12th June, 2006

Win32 API - Tab Control Unhandled Exception Error

capricious_00112-Jun-06 8:57

capricious_001

12-Jun-06 8:57

Hi there,

I am creating an application where one dialog box has a tab control with multiple tabs. I am having difficulties setting it up and would appreciate anyone who can shine some light on the issue. The program runs perfectly with the other controls but when one of my DialogProcs are called via a pushbutton control I get an unhandled exception error. Below is the code for your perusal:

<br />
<br />
BOOL CALLBACK OptionsDialogProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)<br />
{<br />
	HWND tab1_hwnd, tab2_hwnd, CurrentTabHwnd;<br />
	int CurrentTabIndex;<br />
	HWND hwndTab;<br />
<br />
    switch(msg)<br />
    {<br />
		case WM_INITDIALOG:<br />
			{<br />
<br />
				LPSTR tab1_title = "General";<br />
				LPSTR tab2_title = "Advanced";<br />
<br />
				LPINITCOMMONCONTROLSEX tabctl;<br />
<br />
				tabctl->dwSize = sizeof(tabctl);<br />
				tabctl->dwICC = ICC_TAB_CLASSES;<br />
<br />
				InitCommonControlsEx(tabctl);<br />
<br />
				hwndTab = GetDlgItem(hwnd,IDC_TAB1);<br />
<br />
				TCITEM* ItemStruct;<br />
<br />
				ItemStruct->mask		   = TCIF_TEXT;<br />
				ItemStruct->pszText		   = tab1_title;<br />
				ItemStruct->cchTextMax     = sizeof(tab1_title);<br />
				ItemStruct->iImage	       = 0;<br />
				ItemStruct->lParam		   = 0;<br />
<br />
				SendMessage(hwndTab, TCM_INSERTITEM, 0, (LPARAM)ItemStruct);<br />
<br />
				ItemStruct->pszText    = tab2_title;<br />
				ItemStruct->cchTextMax = sizeof(tab2_title);<br />
<br />
				SendMessage(hwndTab, TCM_INSERTITEM, 1, (LPARAM)ItemStruct);<br />
<br />
				tab1_hwnd = CreateDialogParam(GetModuleHandle(NULL), MAKEINTRESOURCE(IDD_OPTIONS_GENERAL), hwndTab, General_OptionsDialogProc, 0);<br />
				tab2_hwnd = CreateDialogParam(GetModuleHandle(NULL), MAKEINTRESOURCE(IDD_OPTIONS_ADVANCED), hwndTab, Advanced_OptionsDialogProc, 0);<br />
				<br />
				CurrentTabIndex = 0;<br />
<br />
				if(!ShowWindow(tab1_hwnd,SW_SHOWDEFAULT))<br />
						MessageBox(hwnd, "Could not initiate InitCommonControlsEx command", "Error:", MB_OK | MB_ICONINFORMATION);<br />
				<br />
<br />
<br />
			}<br />
		break;<br />
<br />
		case WM_NOTIFY:<br />
			{<br />
				switch(LOWORD(wParam)){<br />
					case TCN_SELCHANGE:<br />
						{<br />
							ShowWindow(CurrentTabHwnd, SW_HIDE);<br />
							CurrentTabIndex = SendMessage(hwndTab, TCM_GETCURSEL, 0, 0);<br />
<br />
							switch(CurrentTabIndex){<br />
								case 0:<br />
									ShowWindow(tab1_hwnd,SW_SHOWDEFAULT);<br />
									CurrentTabHwnd = tab1_hwnd;<br />
									break;<br />
								case 1:<br />
									ShowWindow(tab2_hwnd,SW_SHOWDEFAULT);<br />
									CurrentTabHwnd = tab1_hwnd;<br />
									break;<br />
							}<br />
<br />
							<br />
<br />
						}<br />
						break;<br />
					default:<br />
						return FALSE;					<br />
				}<br />
<br />
			}<br />
		break;<br />
<br />
		case WM_COMMAND:<br />
			{<br />
<br />
				switch(LOWORD(wParam)){<br />
<br />
					case IDOK:<br />
						EndDialog(hwnd,0);<br />
						break;<br />
					case IDCANCEL:<br />
						EndDialog(hwnd,0);<br />
						break;<br />
				}<br />
	<br />
			}<br />
        break;<br />
        case WM_CLOSE:<br />
            EndDialog(hwnd, 0);<br />
        break;<br />
<br />
        default:<br />
            return FALSE;<br />
    }<br />
    return 0;<br />
}<br />
<br />
<br />

Running it through my debugger it appears that the program experiences an error at this location:

<br />
tabctl->dwSize = sizeof(tabctl);<br />
tabctl->dwICC = ICC_TAB_CLASSES;<br />

I have also included the resources as well:

<br />
<br />
IDD_OPTIONS DIALOG DISCARDABLE  0, 0, 271, 166<br />
STYLE DS_MODALFRAME | WS_POPUP | WS_CAPTION | WS_SYSMENU<br />
CAPTION "Options"<br />
FONT 8, "MS Sans Serif"<br />
BEGIN<br />
    DEFPUSHBUTTON   "OK",IDOK,7,145,50,14<br />
    PUSHBUTTON      "Cancel",IDCANCEL,214,145,50,14<br />
    CONTROL         "Tab1",IDC_TAB1,"SysTabControl32",0x0,7,7,257,124<br />
END<br />
<br />
IDD_OPTIONS_GENERAL DIALOG DISCARDABLE  20, 15, 150, 60<br />
STYLE WS_CHILD<br />
FONT 8, "MS Sans Serif"<br />
BEGIN<br />
    GROUPBOX        "",IDC_STATIC,15,11,118,38<br />
    LTEXT           "General Tab",IDC_STATIC,53,26,44,8<br />
END<br />
<br />
<br />
IDD_OPTIONS_ADVANCED DIALOG DISCARDABLE  20, 15, 150, 60<br />
STYLE WS_CHILD<br />
FONT 8, "MS Sans Serif"<br />
BEGIN<br />
    GROUPBOX        "",IDC_STATIC,15,11,118,38<br />
    LTEXT           "Advanced Tab",IDC_STATIC,53,26,44,8<br />
END<br />
<br />

Everything looks to be correct so I am not sure as to what could be causing the issue. If this is of any help I am getting these compiler warnings as well:

C:\Program Files\Microsoft Visual Studio\MyProjects\RS_Stats32\RS_Stats32.cpp(95) : warning C4700: local variable 'tabctl' used without having been initialized
C:\Program Files\Microsoft Visual Studio\MyProjects\RS_Stats32\RS_Stats32.cpp(106) : warning C4700: local variable 'ItemStruct' used without having been initialized
C:\Program Files\Microsoft Visual Studio\MyProjects\RS_Stats32\RS_Stats32.cpp(137) : warning C4700: local variable 'CurrentTabHwnd' used without having been initialized
C:\Program Files\Microsoft Visual Studio\MyProjects\RS_Stats32\RS_Stats32.cpp(138) : warning C4700: local variable 'hwndTab' used without having been initialized
C:\Program Files\Microsoft Visual Studio\MyProjects\RS_Stats32\RS_Stats32.cpp(142) : warning C4700: local variable 'tab1_hwnd' used without having been initialized
C:\Program Files\Microsoft Visual Studio\MyProjects\RS_Stats32\RS_Stats32.cpp(146) : warning C4700: local variable 'tab2_hwnd' used without having been initialized

If you need some more information just give me a shout. Just FYI I am running on VC++ 6.0 on a WinXP machine.

Thanks,

Robbie

Re: Win32 API - Tab Control Unhandled Exception Error

led mike12-Jun-06 10:00

led mike

12-Jun-06 10:00

capricious_001 wrote:
LPINITCOMMONCONTROLSEX tabctl;

capricious_001 wrote:
tabctl->dwSize = sizeof(tabctl);

Setting dwSize to the sizeof( a pointer) is not correct.

Re: Win32 API - Tab Control Unhandled Exception Error

capricious_00112-Jun-06 10:42

capricious_001

12-Jun-06 10:42

Hey Led,

Thanks for your reply. I dereferenced the pointer but I am still receiving the same error. I checked on google and someone some how was able to get it working by doing this:

<br />
	LPINITCOMMONCONTROLSEX lpInitCommonControlsEx;<br />
<br />
	lpInitCommonControlsEx.dwSize = (LPINITCOMMONCONTROLSEX);<br />

I'm not sure how that would even work but the person had successful results. I tried it with my code and I received syntax errors so I don't believe thats correct.

Did you have another idea how I could fix this?

Thanks,

Robbie

Re: Win32 API - Tab Control Unhandled Exception Error

David Crow12-Jun-06 11:04

David Crow

12-Jun-06 11:04

capricious_001 wrote:
lpInitCommonControlsEx.dwSize = (LPINITCOMMONCONTROLSEX);

Try:

lpInitCommonControlsEx.dwSize = sizeof(INITCOMMONCONTROLSEX);

"The largest fire starts but with the smallest spark." - David Crow

"Judge not by the eye but by the heart." - Native American Proverb

Re: Win32 API - Tab Control Unhandled Exception Error

led mike12-Jun-06 11:18

led mike

12-Jun-06 11:18

Robbie, DavidCrow has your "fix". I would be more concerned that you are writing C/C++ code but do not understand "how" these things work, or don't, as the case may be. This is a very fundamental aspect of C/C++ development. You should take the time to understand this before continuing on with the project.

good luck

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