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I'll assume you mean an unsigned character string.
1) A string (by default) is a signed character array ending with a null character ('\0').
2) "string" is of type (char*).
3) To treat a string as an unsigned character string:
char* pStr = "string";
unsigned char* puStr = (unsigned char*)pStr;
3) To convert and individule character (in a string) from signed to unsigned:
unsigned char uch = (unsigned char)pStr[i];
That's all there is to it.
INTP
"The more help VB provides VB programmers, the more miserable your life as a C++ programmer becomes."
Andrew W. Troelsen
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Hi,
I have an application (in VC++ 6.0) wherein it displays the images in ListView. So the application starts displaying the images from the Top left corner (0,0).
Now I have added the manifest file (to give XP look to application) in applicatoin resource successfully. (as outlined in the below mentioned link http://www.codeguru.com/Cpp/controls/controls/article.php/c5227/[^])
The application is having the XP look but the images are displayed from the Bottom left corner.
Question:How to set the origin of the ListCtrl to top left corner (0,0) so that the images are displayed from the top left corner (0,0) ?
Thanks & Regards,
Neeraj
Thanks & Regards,
Neeraj
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hi
I have problem in setting the link to the lable having the text .
or is there any way i can set the link to the text and open the explorer for that url.
Need it urgent.waiting for reply as soon as possible
Best Regards
ganesh
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Man are you in the wrong place!
Links to 'lable'?
This forum is for much lower level programmers than you; in other words, people who make code that makes your code work.
INTP
"The more help VB provides VB programmers, the more miserable your life as a C++ programmer becomes."
Andrew W. Troelsen
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hi..
i m not angry with your reply but for your kind information you should not reply such things if you don't like just ignore..
thanx..
xyz
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Does any one have a set of REs that will give an RE-parser a good workout?
Prefered:
A set of REs and a set of test strings, to varify them.
Thanks, all!
INTP
"The more help VB provides VB programmers, the more miserable your life as a C++ programmer becomes."
Andrew W. Troelsen
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Just search on the web for tutorials on regular expressions, you can even limit it to well-known programs like perl, sed, awk, etc...
Check out The Regulator. It's a free regular expression tester and more, it's written in .NET, source code is available too.
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Surely 'written in .NET' is only a bonus if the guy is going to be using .NET ?
I did a rentacoder job to deliver some regexes, and when I did, they didn't test them in the tool they were going to use them in ( written in C# ). No, they used a C++ program with it's own regex flavour. Then they complained that the regexes didn't work. idiots.
Christian
I have several lifelong friends that are New Yorkers but I have always gravitated toward the weirdo's. - Richard Stringer
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Ahhhh! I'm right here!
I am looking for REs to test my parser, written in C/C++, not the one that comes with .NET.
INTP
"The more help VB provides VB programmers, the more miserable your life as a C++ programmer becomes."
Andrew W. Troelsen
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:-DThanks! That is a new one that I've not seen.
Tutorials are great, but I'm not looking for how to use REs. I am looking for test REs to verify that my RE parcer works.
INTP
"The more help VB provides VB programmers, the more miserable your life as a C++ programmer becomes."
Andrew W. Troelsen
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I Solved this Problem, Thankyou
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Learn to program without the wizard, it will make you a much better coder.
I'm not sure this is what you want though, I thought there was an overall setting for controls to send messages to their parent, or is that just in C# ?
Christian
I have several lifelong friends that are New Yorkers but I have always gravitated toward the weirdo's. - Richard Stringer
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Thanks a ot for your answer and advise
I'm sorry to reply so late, but I was completely very busy!
I should tell you I found the answer my self just some minutes
after I put the message, I had to remove the message, sorry!
The answer was to derive a class from CButton, and then change
Button to BitmapButton my self!!!
How ever CBitmapButton is not listed in 'New Class' window,But it is
supported.
Any way thanks alot.
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The answer is still to learn how to write a class without using a wizard.
Christian
I have several lifelong friends that are New Yorkers but I have always gravitated toward the weirdo's. - Richard Stringer
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Since I was programming in Turbo C++ for 2 years, I guss I know how to write a class without the Helps of the Wizard.
How ever in MFC it could make a life more easier.
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What is the MFC 6.0 equivalent of the dir.h calls
_findfirst, _finddata, etc.
They don't work so well any more. 
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 _findfirst is in io.h! I don't know what dir.h is!
INTP
"The more help VB provides VB programmers, the more miserable your life as a C++ programmer becomes."
Andrew W. Troelsen
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Hi Guys,
I am using a Dialog resource template to create a dialog and load that dialog using the function
DialogBox(hMod, (LPCTSTR)IDD_ABOUTBOX, hWnd, (DLGPROC)About);
The WndProc is like this, What i am trying to do here is to load all the BMP files one by one in to a window when the user clicks the button 'Next' or 'Previous'.
I Tried different techniques, but when i click next the Window is not repainted. The cod for the WndProc is shown below
LRESULT CALLBACK About(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam)
{
int i = 0;
int nPos = 0;
switch (message)
{
//HDC hDC, MemDCExercising;
//PAINTSTRUCT Ps;
//HBITMAP bmpExercising;
//HWND ctrl, hwndItem;
//RECT rect;
char szDirectory[256];
WIN32_FIND_DATA FindFileData;
HANDLE hFind;
case WM_INITDIALOG:
GetCurrentDirectory(256, szDirectory);
sprintf(szDirectory,"%s\\debug\\*.bmp",szDirectory);
//finding the first file
hFind = FindFirstFile(szDirectory, &FindFileData);
if (hFind != INVALID_HANDLE_VALUE) {
sprintf(allFiles[i++],"%s", FindFileData.cFileName);
//Finding all the bmp files
while(FindNextFile (hFind,&FindFileData)) {
sprintf(allFiles[i++],"%s", FindFileData.cFileName);
}
totalFiles = i; //Total bmp files
} else { //if there are no BMP files then disable all bot h buttons
//EnableWindow(GetDlgItem(hDlg, IDC_PREVIOUS_IMAGE), FALSE);
EnableWindow(GetDlgItem(hDlg, IDC_NEXT_IMAGE), FALSE);
}
EnableWindow(GetDlgItem(hDlg, IDC_PREVIOUS_IMAGE), FALSE);
return TRUE;
case WM_COMMAND:
if (LOWORD(wParam) == IDOK || LOWORD(wParam) == IDCANCEL)
{
EndDialog(hDlg, LOWORD(wParam));
return TRUE;
}
if (LOWORD(wParam) == IDC_NEXT_IMAGE) {
currentFile ++;
EnableWindow(GetDlgItem(hDlg, IDC_PREVIOUS_IMAGE), TRUE);
//RedrawWindow(hDlg, NULL, NULL, RDW_ERASE);
//InvalidateRect (GetDlgItem(hDlg, IDC_CANVAS), NULL, FALSE);
if(currentFile>=totalFiles-1) { //if all the files has been viewed then disable next button
EnableWindow(GetDlgItem(hDlg, IDC_NEXT_IMAGE), FALSE);
}
//hwndItem = (HWND) GetDlgItem(hDlg,IDC_CANVAS);
//repaintWindow(hDlg);
//nPos = SendMessage( hDlg, WM_PAINT, 0, 0 );
//InvalidateRect (hDlg, NULL, TRUE);
UpdateWindow (hDlg);
//RedrawWindow(hDlg, NULL, NULL, RDW_INTERNALPAINT);
}
if (LOWORD(wParam) == IDC_PREVIOUS_IMAGE) {
currentFile --;
EnableWindow(GetDlgItem(hDlg, IDC_NEXT_IMAGE), TRUE);
//RedrawWindow(hDlg, NULL, NULL, RDW_ERASE);
//InvalidateRect (GetDlgItem(hDlg, IDC_CANVAS), NULL, FALSE);
if(currentFile<=0) { //if all the files has been viewed then disable next button
currentFile = 0;
EnableWindow(GetDlgItem(hDlg, IDC_PREVIOUS_IMAGE), FALSE);
}
//hwndItem = (HWND) GetDlgItem(hDlg,IDC_CANVAS);
//repaintWindow(hDlg);
//nPos = SendMessage( hDlg, WM_PAINT, 0, 0 );
//InvalidateRect (hDlg, NULL, TRUE);
//RedrawWindow(hDlg, NULL, NULL, RDW_INTERNALPAINT);
UpdateWindow (hDlg);
}
return TRUE;
break;
case WM_DESTROY:
PostQuitMessage (WM_QUIT);
break;
case WM_PAINT:
/*ctrl = GetDlgItem(hDlg, IDC_CANVAS);
hDC = BeginPaint(ctrl, &Ps);
// Load the bitmap from the resource
//bmpExercising = LoadBitmap(hInst, MAKEINTRESOURCE(IDB_BITMAP1));
//Load bitmap from a file
bmpExercising = (HBITMAP)LoadImage(
hInst, // handle to instance
allFiles[currentFile], // image to load
IMAGE_BITMAP, // image type
0, // desired width
0, // desired height
LR_LOADFROMFILE// load options
);
//GetBitmapDimensionEx (bmpExercising, bmpSize);
// Create a memory device compatible with the above DC variable
MemDCExercising = CreateCompatibleDC(hDC);
// Select the new bitmap
SelectObject(MemDCExercising, bmpExercising);
GetWindowRect(ctrl,&rect); // Copy the bits from the memory DC into the current dc
StretchBlt(hDC, 0, 0, rect.right - rect.left,
rect.bottom - rect.top,
MemDCExercising, 0, 0,200,
200, SRCCOPY);
// Restore the old bitmap
DeleteDC(MemDCExercising);
DeleteObject(bmpExercising);
EndPaint(ctrl, &Ps);
//UpdateWindow(GetDlgItem(hwnd, IDD_DIALOG_BOX));
//return FALSE;
*/
repaintWindow(hDlg);
break;
//Initilize the dialog
//default:
// return DefWindowProc(hDlg, message, wParam, lParam);
}
return FALSE;
}
void repaintWindow (HWND hDlg) {
HDC hDC, MemDCExercising;
PAINTSTRUCT Ps;
HBITMAP bmpExercising;
HWND ctrl;//, hwndItem;
RECT rect;
ctrl = GetDlgItem(hDlg, IDC_CANVAS);
hDC = BeginPaint(ctrl, &Ps);
// Load the bitmap from the resource
//bmpExercising = LoadBitmap(hInst, MAKEINTRESOURCE(IDB_BITMAP1));
//Load bitmap from a file
bmpExercising = (HBITMAP)LoadImage(
hInst, // handle to instance
allFiles[currentFile], // image to load
IMAGE_BITMAP, // image type
0, // desired width
0, // desired height
LR_LOADFROMFILE// load options
);
//GetBitmapDimensionEx (bmpExercising, bmpSize);
// Create a memory device compatible with the above DC variable
MemDCExercising = CreateCompatibleDC(hDC);
// Select the new bitmap
SelectObject(MemDCExercising, bmpExercising);
GetWindowRect(ctrl,&rect); // Copy the bits from the memory DC into the current dc
StretchBlt(hDC, 0, 0, rect.right - rect.left,
rect.bottom - rect.top,
MemDCExercising, 0, 0,200,
200, SRCCOPY);
// Restore the old bitmap
DeleteDC(MemDCExercising);
DeleteObject(bmpExercising);
EndPaint(ctrl, &Ps);
//UpdateWindow(GetDlgItem(hwnd, IDD_DIALOG_BOX));
//return FALSE;
}
Please help me.
Thanking in Advance,
Jobby
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(FIRST) I am getting used to seeing stuff like this, but it does not change the fact that it should not compile:
switch (message)
{
char szDirectory[256];
WIN32_FIND_DATA FindFileData;
HANDLE hFind;
...
...
}
(SECOND) I'm too tired for this right now!
(THIRD) Ask me how; when I'm asleep (It's that simple).
INTP
"The more help VB provides VB programmers, the more miserable your life as a C++ programmer becomes."
Andrew W. Troelsen
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Thanks Mr.Shaw, but that dosen't help....
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Don't bother, i fixed the problem.
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The application I am working on, call it Main, starts up another executable, call it Sub, and the two share an event. The event is created in Main before Sub starts, and then opened in Sub. The problem I am having in debugging them is that if Main hasn't reset the event, Sub freezes the computer, to the point where the only way I can recover is to power-down. The freeze happens here:
<br />
while (WaitForSingleObject(hAcquireActive, 100)==WAIT_OBJECT_0)<br />
{<br />
Sleep(1000);<br />
}<br />
I tried something slightly different by creating an event to use in place of the Sleep, but it freezes the computer in the same way.
That code is:
<br />
HANDLE waitForeverEvent;<br />
waitForeverEvent = CreateEvent(NULL, FALSE, FALSE, "forever");<br />
while (WaitForSingleObject(hAcquireActive, 100)==WAIT_OBJECT_0)<br />
{<br />
WaitForSingleObject(waitForeverEvent, 1000);<br />
}<br />
Environment is : Windows XP Professional, Visual Studio 2003.
Any explanation for why the computer is freezing, and/or a better way to wait for the hAcquireActive event to be reset while I am debugging?
Thanks.
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