C / C++ / MFC

Re: VC 6.0 TO VC 8.0 POSTMESSAGE()

23-Jul-07 20:05

shakumar_22 wrote:
When Client Connect to Server Socket in Server Socket OnAccept() Function its get Run time Error.

What error? If you run in the debugger and put a breakpoint at the start of CServer::OnAccept(),
does the breakpoint get hit? If so, and you single step through the code, where does the error
occur?

Mark

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

Rage24-Jul-07 1:41

Rage

24-Jul-07 1:41

Mark Salsbery wrote:
Wow. That has absolutely nothing related to your first post

The first post was some pain yeld by the CAPS LOCK key being hit.

http://www.readytogiveup.com/[^] - Do something special today.
http://www.totalcoaching.ca/[^] - Give me some feedback about this site !

Re: VC 6.0 TO VC 8.0 POSTMESSAGE()

Mark Salsbery24-Jul-07 4:43

Problem in GDI+ LinearGradientBrush

24-Jul-07 4:43

Rage wrote:
The first post was some pain yeld by the CAPS LOCK key being hit

I didn't even consider that!

Laugh | :laugh:

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

Naveen23-Jul-07 18:36

23-Jul-07 18:36

Hi all,

I am trying to draw a gradient rectangle using the below code. But the problem is am not getting the correct color in the bottom. As per the code the expected color is RGB(0,0,255). But now I am getting RGB(3,0,252). Is there any way to show the correct value?

Color clr1( 255,255,0,0 );<br />
Color clr2( 255,0,0,255 );<br />
Rect rect( 0,0,100,100 );<br />
LinearGradientBrush pushedFace( rect, clr1, clr2, LinearGradientModeVertical );<br />
CClientDC dc(this);<br />
Graphics gr(dc.m_hDC);<br />
gr.FillRectangle( &pushedFace,rect );

Thanks in advance

nave

[OpenedFileFinder]

Mark Salsbery23-Jul-07 19:11

23-Jul-07 19:11

Naveen.R wrote:
Is there any way to show the correct value?

Add 1 to the rect height.

Mark

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

Naveen23-Jul-07 19:14

23-Jul-07 19:14

you mean like

LinearGradientBrush pushedFace( Rect( 0,0, 30, 101 ), clr1, clr2, LinearGradientModeVertical );.

In this case the color became more lighter. RGB(5,0,250) Frown | :(

nave

[OpenedFileFinder]

Mark Salsbery23-Jul-07 19:20

23-Jul-07 19:20

You're right! LOL sorry.

The problem is with the math (apparently which I'm too tired to comprehend Smile | :)

).

Incrementing evenly through 100 rows from 0 to 255, the last row ends at 252.45 or 252.
There's no way around it that I know of except adjusting the width/height to a value that makes
it come out exact.

Mark

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

Naveen23-Jul-07 20:12

23-Jul-07 20:12

Mark Salsbery wrote:
Incrementing evenly through 100 rows from 0 to 255

Well I tried making the following changes. Set the height as 255.clr1 = RGB( 0,0,0), clr2 = RGB(0,0,255 )

In this case the color should come correct isnt it? but now the color is 0,0,254 at the bottom( I know the color change is not noticeable. But I have to meet the specifications... ).

nave

[OpenedFileFinder]

Mark Salsbery23-Jul-07 20:29

23-Jul-07 20:29

You may have to come up with your own formula.

If they use a formula similar to this one: Using color gradients as backgrounds in your
dialogs and views[^], then it will never be exact on the last row.

Mark

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

Naveen23-Jul-07 20:38

23-Jul-07 20:38

Mark Salsbery wrote:
You may have to come up with your own formula.

Thanks for your support. Rose | [Rose]

nave

[OpenedFileFinder]

Mark Salsbery23-Jul-07 21:00

23-Jul-07 21:00

I'll look deeper into this in the morning - for now, I have to sleep Sleepy | :zzz:

Good luck!
Mark

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

Naveen23-Jul-07 21:16

23-Jul-07 21:16

Mark Salsbery wrote:
I'll look deeper into this in the morning - for now, I have to sleep

Thanks for that... Good night.

nave

[OpenedFileFinder]

Mark Salsbery24-Jul-07 6:18

24-Jul-07 6:18

OK, if you want to roll your own gradient rect, this formula should work

(((r2 - r1) / (rectheight - 1)) * currentrow) + r1 = rdest
(((g2 - g1) / (rectheight - 1)) * currentrow) + g1 = gdest
(((b2 - b1) / (rectheight - 1)) * currentrow) + b1 = bdest

where
r,g,b == red,green,blue components
Desired Start row color == RGB(r1,g1,b1)
Desired End row color == RGB(r2,g2,b2)
currentrow == current row of rect being drawn (0-based)

RGB(rdest,gdest,bdest) is the resulting color for the currentrow

Note this requires floating point so it will be slower than the standard integer formula.
The example is for vertical gradient - it would work for columns as well (horizontal gradient).

Mark

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

Naveen24-Jul-07 14:02

Dialog handle of Dialog-based application

24-Jul-07 14:02

Thanks

nave

[OpenedFileFinder]

rp_suman23-Jul-07 18:32

rp_suman

23-Jul-07 18:32

How to get the Dialog handle of Dialog-based application?
Best Regards,
Suman

Re: Dialog handle of Dialog-based application

MANISH RASTOGI23-Jul-07 18:48

MANISH RASTOGI

23-Jul-07 18:48

use GetSafeHwnd()

Manish Rastogi

Re: Dialog handle of Dialog-based application

rp_suman23-Jul-07 19:07

rp_suman

23-Jul-07 19:07

Hi Manish,
Thanks for the help!!
Best Regards,
Suman

Re: Dialog handle of Dialog-based application

Hamid_RT31-Jul-07 20:07

Hamid_RT

31-Jul-07 20:07

Does m_hWnd helpful?

WhiteSky

Directshow linking errors - VC++

techratna23-Jul-07 16:57

techratna

23-Jul-07 16:57

Hi, I want to find the format of a wav file. I use the MediaDetector interface like this:
CoCreateInstance(CLSID_MediaDet,NULL,CLSCTX_INPROC_SERVER,IID_IMediaDet,(void**) &pIMediaDet);

I have included dshow.h and linked to strmiids.lib but I get these link errors:

AudioController.obj : error LNK2001: unresolved external symbol _CLSID_MediaDet
AudioController.obj : error LNK2001: unresolved external symbol _IID_IMediaDet

Any help would be appreciated.
Thanks
Ratna

Re: Directshow linking errors - VC++

Mark Salsbery23-Jul-07 18:59

Child frame and multiple view problem

23-Jul-07 18:59

#include <Qedit.h>

"This header file is not compatible with Microsoft® Direct3D® headers later than version 7."

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

oro7723-Jul-07 14:58

oro77

23-Jul-07 14:58

Hello,

I am a beginner in MFC. Here is my problem :

I have a MDI application, when I display one image on a child frame, the image disappear if I move(resize or minimize) the frame. I don't really know where the problem comes from. Sniff | :^)

In my Child frame, I use :

<br />
ON_COMMAND_RANGE(ID_IMAGE1, ID_IMAGE2, OnView)<br />

OnView is like :

<br />
void CChildFrame::OnView(UINT nID)<br />
{<br />
	CBitmap bmp1, bmp2;<br />
	CClientDC dc1(this), dc2(this);<br />
	CDC bmDC1, bmDC2;<br />
	BITMAP  bi1, bi2;<br />
	bmp1.LoadBitmap(IDB_BITMAP1);<br />
	bmp2.LoadBitmap(IDB_BITMAP2);<br />
<br />
	bmDC1.CreateCompatibleDC(&dc1);<br />
	bmDC2.CreateCompatibleDC(&dc2);<br />
<br />
	CBitmap *pOldbmp1 = bmDC1.SelectObject(&bmp1);<br />
	CBitmap *pOldbmp2 = bmDC2.SelectObject(&bmp2);<br />
<br />
	bmp1.GetBitmap(&bi1);<br />
	bmp2.GetBitmap(&bi2);<br />
<br />
	<br />
	switch( nID )<br />
	{<br />
	case ID_IMAGE1:<br />
		// Load the bitmap from the resource 1<br />
<br />
		dc1.BitBlt(0,0,bi1.bmWidth,bi1.bmHeight,&bmDC1,0,0,SRCCOPY);<br />
		bmDC1.SelectObject(pOldbmp1);	<br />
<br />
		break;<br />
<br />
	case ID_IMAGE2:<br />
<br />
		dc2.BitBlt(0,0,bi2.bmWidth,bi2.bmHeight,&bmDC2,0,0,SRCCOPY);<br />
		bmDC2.SelectObject(pOldbmp2);<br />
<br />
		break;<br />
	}<br />
}<br />

Any help would be very appreciated Smile | :)

Re: Child frame and multiple view problem

Mark Salsbery23-Jul-07 16:23

Re: Child frame and multiple view problem

23-Jul-07 16:23

Typically you should be drawing in a view, in a CView::OnDraw() override.

You're drawing in a frame window, which, if there's a view embedded in it, the view window is
covering whatever you draw.

If there's not an embedded view in the frame, then you need to draw your bitmap in response to
WM_PAINT.

Mark

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

oro7724-Jul-07 14:39

oro77

24-Jul-07 14:39

ok thank you, I will try this way.

dellthinker23-Jul-07 14:46

dellthinker

23-Jul-07 14:46

Hi all. Im going to try my best to explain what i need here.

I need a function to return true if a certain parameter is entered in, based on the true i need other function to call on this function to make sure its ok to proceed, if false is returned then dont do anything, if true is returned then go ahead and execute. I made a simple prog using a boolean to return true.

<br />
#include <iostream><br />
#include <string><br />
using namespace std;<br />
bool password(const char* pass);<br />
<br />
<br />
string input;<br />
int main(){<br />
	cout << "Please enter password: ";<br />
	cin >> input;<br />
	password(input.c_str());<br />
	system("pause");<br />
	return 0;<br />
}<br />
<br />
bool password(const char* pass){<br />
	string password="stupidpass";<br />
	if(password == input){<br />
		cout << "Password correct! " << endl;<br />
		return true;<br />
	}<br />
	else<br />
	{<br />
		cout << "Password incorrect! " << endl;<br />
		return false;<br />
	}<br />
}<br />

It works perfectly. Now what it is im trying to do is compare the strings from password and the sock buffer. So i tried the following ...

<br />
bool checklogin(const char* login);<br />
<br />
	if(servbuff.find(login) != string::npos){<br />
		if(servbuff.find(auth) != string::npos){<br />
			checklogin(servbuff.c_str());<br />
		}<br />
		else{<br />
			error();<br />
		}<br />
	}<br />
<br />
bool checklogin(const char* login){ <br />
	if(password == servbuff){<br />
	cout << "Login correct " << endl;<br />
		return true;<br />
	}<br />
	else{<br />
	cout << "Login incorrect " << endl;<br />
		return false;<br />
           }<br />
}<br />

And it kept saying incorrect, i know that it is because the string isnt matching correctly. What im trying to figure out how would i go about calling the function with the parameter that will send what it needs to match the two strings. If im unclear about something let me know and i'll try to be more specific. Thanx in advance!

Re: login

Mark Salsbery23-Jul-07 16:31