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Delphi Code:
while not bDone do begin
s_hMemFile := CreateFileMapping( $FFFFFFFF, Nil, PAGE_READWRITE,
0, cbSize, @sTemp[1] );
idErr := GetLastError;
if ( idErr <> 0 ) and { => Function Failed }
( idErr <> ERROR_ALREADY_EXISTS ) then begin
CloseHandle( s_hMemFile );
s_hMemFile := 0;
inc( iRetryCount );
// Map the File to Memory
if bDone or not FGenerateName then
Data := MapViewOfFile( s_hMemFile, FILE_MAP_ALL_ACCESS, 0, 0, ENTIRE_FILE )
else begin
if FGenerateName and (Data <> Nil) then begin
try
UnMapViewOfFile( Data );
finally
Data := Nil;
end; { try }
end; { if }
end; { if then else }
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I don't see a problem there, however, I have to ask about the code you use to set the value(s) in the MFC program.
In your first post you showed SP_Z being used with an index, such as SP_Z[15], and in the next post, you showed that you're setting it without an index. Is this an array or not an array?
The difficult we do right away...
...the impossible takes slightly longer.
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I am sorry. The first one is correct. Its an array.
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hello guys... I am trying to write this small chat application. Here, I want the user name, colored differently than his/her message. Now I had a look at the CHARFORMAT structure but don't know which of the value needs to be set, in order to change color of my user name only. Here is what it looks like
typedef struct _charformat {
UINT cbSize;
DWORD dwMask;
DWORD dwEffects;
LONG yHeight;
LONG yOffset;
COLORREF crTextColor;
BYTE bCharSet;
BYTE bPitchAndFamily;
TCHAR szFaceName[LF_FACESIZE];
} CHARFORMAT;
Here is definition for my function which adds the message to the rich edit control
void CConnectUserDlg::AddMessage(LPCTSTR strUser, LPCTSTR strMessage)
{
CString strCompleteMsg;
strCompleteMsg.Format("%s:\t%s\n", strUser, strMessage);
int nLength;
nLength = m_richMessages.GetTextLength();
m_richMessages.SetSel(nLength, nLength);
m_richMessages.ReplaceSel(strCompleteMsg);
m_richMessages.SetSel(-1, 0);
GetDlgItem(IDC_EDIT)->SetWindowText("");
GetDlgItem(IDC_EDIT)->SetFocus();
}
Thanks for any pointers.
This world is going to explode due to international politics, SOON.
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What have you tried so far? Did you examine the docs for the CHARFORMAT structure: CHARFORMAT[^]
The difficult we do right away...
...the impossible takes slightly longer.
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oops..I forgot to paste the following code in the function body. Here is what I am trying at the top of the provided function body in OP.
CHARFORMAT Cfm;
m_richMessages.GetSelectionCharFormat(Cfm);
Cfm.cbSize = sizeof(CHARFORMAT);
Cfm.dwMask = CFM_ITALIC;
Cfm.dwEffects ^= CFE_ITALIC;
Cfm.crTextColor = RGB(0,255,0);
m_richMessages.SetSelectionCharFormat(Cfm);
1 - Now first, this code colors the entire rich edit box. But I want to change the color of the user name only, not his/her message.
2 - To surprise you, this code italicizes the text in the rich edit control but does not change the color of it.
This world is going to explode due to international politics, SOON.
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Well, one thing I see is that you forgot to add the CFM_COLOR flag to the mask:
Cfm.dwMask = CFM_ITALIC | CFM_COLOR;
This flag tells the function to set the color based upon the crTextColor member of the structure.
The difficult we do right away...
...the impossible takes slightly longer.
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Thanks but how do I select UserName and change its color? Thanks for any input on this.
This world is going to explode due to international politics, SOON.
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When you're setting the text of the User Name and message, you must keep track of what character positions represent the user name, and then use the EM_EXSETSEL message to select those characters.
Once those characters are selected, then you can use the code you have shown in order to set the formatting.
The difficult we do right away...
...the impossible takes slightly longer.
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Simple, Take the Name in CString or TCHAR Array, In OnPaint, or OnDraw Change the Text Color...
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COLORREF crTextColor;
I would assume this field used with the EM_SETCHARFORMAT[^] message; a quick test should confirm it.
Programming is work, it isn't finger painting. Luc Pattyn
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hi,
i have developed a GUI in MFC vs2008. now i wanted to get GPS coordinates of different locations using offline map. the idea is to have a map in my GUI dialog, and by clicking on specific area inside the map would assign the coordinates of that area to specific variable in my GUI code.
now the problem is how to do it? where to start? and if i wanted to use Falcon-view or offline Google map, than what would i need to do?
Regards
Jawad
modified 23-May-12 6:18am.
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jawadali477 wrote: where to start?
Looking at some of these links[^] is as good a place as any.
Programming is work, it isn't finger painting. Luc Pattyn
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I am trying to write a virtual chat system, in which you can ask the computer any question you want, and then it will give out the correct answer. My only problem is getting the code to loop back to the start, thus allowing the user to input another question, continuously getting the answer, until the user specifies to stop.
#include <iostream>
#include <string>
#include <stdlib.h>
#include <windows.h>
#include <conio.h>
#include <tchar.h>
using namespace std;
int Australia();
int main()
{
cout << "Welcome to Virtual Chat, ask any question you want.\n";
int Keep = 1;
string Input;
while (Keep == 1)
{
cin >> Input;
if (Input == "What is your name?" || "what is your name?" || "What is your name");
{
cout << "I am a computer, I do not have a Name";
break;
}
continue;
}
char f;
cin >> f;
return 0;
}
Thankyou for the help.
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It looks your code is already doing it: the while loop accepts user input again and again.
Am I missing something?
Veni, vidi, vici.
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Not really, at the moment it only accepts one input then stops.
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Ah, OK. That is because the if condition is wrong, it should be
if (Input.compare("What is your name?")==0 || Input.compare("what is your name?")==0 || Input.compare("What is your name")==0)
note there is no trailing semicolon ( ';' ).
Veni, vidi, vici.
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But how do i get the output from the console.
Here is the code:
#include <iostream>
#include <string>
#include <stdlib.h>
#include <windows.h>
#include <conio.h>
#include <tchar.h>
using namespace std;
int Australia();
int main()
{
cout << "Welcome to Virtual Chat, ask any question you want.\n";
int Keep = 1;
string Input;
while (Keep == 1)
{
cin >> Input;
if (Input.compare("What is your name?")==0 || Input.compare("what is your name?")==0 || Input.compare("What is your name")==0)
{
cout << "I am a computer, I do not have a Name";
break;
}
continue;
}
char f;
cin >> f;
return 0;
}
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Change from
Dasttann777 wrote: cin >> Input;
to
getline(cin, Input);
Veni, vidi, vici.
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Really sorry for the nagging, but the loop now no longer works.
#include <iostream>
#include <string>
#include <stdlib.h>
#include <windows.h>
#include <conio.h>
#include <tchar.h>
using namespace std;
int Australia();
int main()
{
cout << "Welcome to Virtual Chat, ask any question you want.\n";
int Keep = 1;
string Input;
while (Keep == 1)
{
getline(cin, Input);
if (Input.compare("What is your name?")==0 || Input.compare("what is your name?")==0 || Input.compare("What is your name")==0)
{
cout << "I am a computer, I do not have a Name";
break;
}
continue;
}
char f;
cin >> f;
return 0;
}
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Do you mean the break statement is working (remove it if exiting the loop after the cout << "I am .."; is not the intended behaviour)?
Veni, vidi, vici.
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I feel like such an idiot, thankyou for pointing that out.
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You are just learning.
Veni, vidi, vici.
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One more time – capAVI question for a real capAVI gurus.
I have two, so far – I'll need more, MFC views with capPreview enabled.
Using
lResult = ::SendMessage (hWndC, WM_CAP_SET_PREVIEW,true,0L);
if(!lResult)
{
TRACE("\nFailed ");
}
The views are working – displaying the camera capture – but only when only one of them is activated.
When I try switching between two MFC windows only the one activated first actually displays the preview.
I am using Wnd class to initialize the preview and have no failures doing that for both views.
I do not quite get how the preview is actually putting the data into the capture window, been unable to debug / trace it thru.
Any reasonable help will be as always appreciated.
Thanks Vaclav
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Here is an update.
I have implemented callback on error and received this error when the second view is activated
...no frames detected... check and make sure vertical synch is enabled...
So, why do I get this error on the second view only?
I am not sure where to fix it , some sources say to lower the capture dimensions and or fix it in the video hardware.
I''ll try different driver next.
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