MultiByteToWideChar - C / C++ / MFC Discussion Boards

ashish dogra20-Jul-06 1:39

20-Jul-06 1:39

postmessage does not take one parameter
and i want to minimize all open windows not only one ,
thanks for your reply.

Ashish Dogra
MCA
Noida

Re: minimize all windows

goodoljosh198020-Jul-06 1:42

goodoljosh1980

20-Jul-06 1:42

You can accomplish this in three calls then...the PostMessage commands you have (will minimize all windows except the dialog calling it).

Then use ShowWindow(SW_MINIMIZE) to minimize the current window.

Re: minimize all windows

ashish dogra20-Jul-06 1:51

ashish dogra

20-Jul-06 1:51

thanks
but it does not minimize all windows it minimize only itself and one window.
and also tell me if button is on third dialog then last two dialog are not minimized

Ashish Dogra
MCA
Noida

Re: minimize all windows

goodoljosh198020-Jul-06 1:55

goodoljosh1980

20-Jul-06 1:55

ashish dogra wrote:
but the dialog box on which button to minimize all does not minmimize.
that is all open windows minimize except the dialog box containing button

Doesn't this mean that the only window not minimized is the one with the "button" on it? At this point in your program, you only have 1 window left open? If so, call the ShowWindow now and this one window will minimize.

Re: minimize all windows

David Crow20-Jul-06 3:47

David Crow

20-Jul-06 3:47

Why not something as simple as:

keybd_event(VK_LWIN, 0, 0, 0);
keybd_event(77, 0, 0, 0);
keybd_event(VK_LWIN, 0, KEYEVENTF_KEYUP, 0);

"Money talks. When my money starts to talk, I get a bill to shut it up." - Frank

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

Re: minimize all windows

earl20-Jul-06 3:51

earl

20-Jul-06 3:51

That's a terrible technique. You need to check if applications have a systembox and, if so, if the minimize button is visible. Otherwise you are risking sending an application a message it specifically chooses not to handle, often triggering unexpected states in the code.

earl

Re: minimize all windows

ThatsAlok21-Jul-06 1:18

ThatsAlok

21-Jul-06 1:18

ashish dogra wrote:
.and i do coding on this button

call PostMessage(HWND_BROADCAST,WM_SYSCOMMAND,SC_MINIMIZE,0);

"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
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MultiByteToWideChar

tanarnelinistit20-Jul-06 1:31

tanarnelinistit

20-Jul-06 1:31

i have the folowing function that doesn't work:
i get an error like: "MultiByteToWideChar' : cannot convert parameter 5 from 'char *' to 'unsigned short *'
Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or function-style cast"

void CMina_sView::OnListenCom1()
{
CSerial serial;
LONG lLastError = ERROR_SUCCESS;
TCHAR tszMsg[200];
lLastError = serial.Open(_T("COM5"),0,0,false);
lLastError = serial.Setup(CSerial::EBaud9600,CSerial::EData8,CSerial::EParNone,CSerial::EStop1);
lLastError = serial.SetMask(CSerial::EEventBreak |
CSerial::EEventCTS |
CSerial::EEventDSR |
CSerial::EEventError |
CSerial::EEventRing |
CSerial::EEventRLSD |
CSerial::EEventRecv);

lLastError = serial.SetupReadTimeouts(CSerial::EReadTimeoutNonblocking);

// Wait for an event
lLastError = serial.WaitEvent();
// Save event
const CSerial::EEvent eEvent = serial.GetEventType();
// Handle ring event

// Handle data receive event
if (eEvent & CSerial::EEventRecv)
{
// Read data, until there is nothing left
DWORD dwBytesRead ;
char szBuffer[101];
do
{
// Read data from the COM-port
lLastError = serial.Read(szBuffer,sizeof(szBuffer)-1,&dwBytesRead);

// Finalize the data, so it is a valid string
szBuffer[dwBytesRead] = '\0';

// Convert the ANSI data to Unicode
LPTSTR lpszBuffer = LPTSTR(_alloca((dwBytesRead+1)*sizeof(TCHAR)));
MultiByteToWideChar(CP_ACP, 0, szBuffer, strlen(szBuffer), lpszBuffer, sizeof(lpszBuffer)+1);
m_pSet->AddNew();
m_pSet->m_Nume=szBuffer;
m_pSet->m_Serie="asfasdvce";
CTime time = CTime::GetCurrentTime();
m_pSet->m_Data=time;
UpdateData(TRUE);
if (m_pSet->CanUpdate())
m_pSet->Update();
m_pSet->Requery();
UpdateData(FALSE);
m_pSet->Close();
m_pSet->Open();
Invalidate();
UpdateWindow();

}
while (dwBytesRead == sizeof(szBuffer)-1);
}

// Close the port again
serial.Close();

}

Re: MultiByteToWideChar

Jetli Jerry20-Jul-06 1:41

Jetli Jerry

20-Jul-06 1:41

tanarnelinistit wrote:
// Convert the ANSI data to Unicode
LPTSTR lpszBuffer = LPTSTR(_alloca((dwBytesRead+1)*sizeof(TCHAR)));
MultiByteToWideChar(CP_ACP, 0, szBuffer, strlen(szBuffer), lpszBuffer, sizeof(lpszBuffer)+1);

I think you need to use WCHAR instead of LPTSTR and for sizeof(TCHAR) use sizeof(WCHAR)
hope this helps

Jetli
Constant Thing In World Is Change.

Re: MultiByteToWideChar

Steve S20-Jul-06 1:44

Steve S

20-Jul-06 1:44

tanarnelinistit wrote:
LPTSTR lpszBuffer = LPTSTR(_alloca((dwBytesRead+1)*sizeof(TCHAR)));
MultiByteToWideChar(CP_ACP, 0, szBuffer, strlen(szBuffer), lpszBuffer, sizeof(lpszBuffer)+1);

Shouldn't that be:
LPWSTR lpszBuffer = reinterpret_cast<LPWSTR>(_alloca(dwBytesRead+1)*sizeof(WCHAR));

Personally, I wouldn't use _alloca, I'd use something like

WCHAR wszBuffer[102]; // If you really must use magic numbers...

Steve S
Developer for hire

Re: MultiByteToWideChar

bosfan20-Jul-06 1:49

bosfan

20-Jul-06 1:49

Hello,

replace your code:

<br />
 // Convert the ANSI data to Unicode<br />
LPTSTR lpszBuffer = LPTSTR(_alloca((dwBytesRead+1)*sizeof(TCHAR)));<br />

with this code:

<br />
// i use similar like this:<br />
TCHAR* unicode_string;<br />
unicode_string = (TCHAR*)calloc(dwBytesRead+1, sizeof(TCHAR));<br />

maybe helps?

or try instead LPTSTR to use LPWSTR???
regards
break;

Re: MultiByteToWideChar

Naveen20-Jul-06 1:50

Naveen

20-Jul-06 1:50

maybe u haven't define _UNICODE. Hence
LPTSTR lpszBuffer is equavalent to char* lpszBuffer.

so

Either define _UNICODE
or
change LPTSTR lpszBuffer to wchar_t* lpszBuffer;

nave

Re: MultiByteToWideChar

tanarnelinistit20-Jul-06 3:23

tanarnelinistit

20-Jul-06 3:23

Thanks for the tips. Now i don't get the error any more, but still my string hasn't got the correct value. I should get something like: "FFFFAAAAA121312C" and I get "F", only F.

Re: MultiByteToWideChar

David Crow20-Jul-06 3:49

David Crow

20-Jul-06 3:49

tanarnelinistit wrote:
...my string hasn't got the correct value. I should get something like: "FFFFAAAAA121312C" and I get "F", only F.

How are you verifying this?

"Money talks. When my money starts to talk, I get a bill to shut it up." - Frank

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

Re: MultiByteToWideChar

tanarnelinistit20-Jul-06 3:54

tanarnelinistit

20-Jul-06 3:54

I have a program that came with the tool that connects to the COM, and I know the value I should get because that's what that prg gives me.

Re: MultiByteToWideChar

Naveen20-Jul-06 17:27

Naveen

20-Jul-06 17:27

i think this is because the IDE dosen't show the unicode strings... change the IDE settings as below..

take tool->options menu.

now take the debug tab in the Options dialog displayed.
U can find a check box saying "Display unicode strings". Tick that check box.

now run the application with a break point set in the next line of "MultiByteToWideChar(..)" function. Check the value in the variable when breakpoint reaches there Smile | :)

nave

Date and Time Picker

goodoljosh198020-Jul-06 1:27

goodoljosh1980

20-Jul-06 1:27

Hey All,

I am implementing the Date & Time Picker through MFC. I placed it on my dialog and assigned a variable to it...CDateTimeCtrl m_DateTime;

I also added the event handler OnDtnCloseupDatetimepicker, and it works fine as long as I don't try to pick a date before Jan 1, 1970. If I pick a date before then, I get a Debug Assertion error on atltime.inl, Line 167, Expression: m_time != -1.

I have never seen this before....

Here is the code that I have in the closeup function...
void Measure1::OnDtnCloseupDatetimepicker1(NMHDR *pNMHDR, LRESULT *pResult)
{
m_DateTime.GetTime(time);
int mnth = time.GetMonth();
switch(mnth)
{
case 1: Month = "January";
break;

case 2: Month = "February";
break;
case 3: Month = "March";
break;
case 4: Month = "April";
break;
case 5: Month = "May";
break;
case 6: Month = "June";
break;
case 7: Month = "July";
break;
case 8: Month = "August";
break;
case 9: Month = "September";
break;
case 10: Month = "October";
break;
case 11: Month = "November";
break;
case 12: Month = "December";
break;
}
Day = time.GetDay();
Year = time.GetYear();
*pResult = 0;
}

Thanks in advance....

Re: Date and Time Picker

krmed20-Jul-06 2:24

krmed

20-Jul-06 2:24

I would guess that your time is a CTime. If so, the CTime object date limits are 1/1/1970 to 1/18/2038 (in VC6) and 1/1/1970 to 12/31/3000 in VC8 (2005).

You could use COleDateTime for your time variable instead and that should solve your problem - it will handle dates from 1/1/100 to 12/31/9999.

Hope that helps.

Karl - WK5M
PP-ASEL-IA (N43CS)
<kmedcalf@ev1.net>
PGP Key: 0xDB02E193
PGP Key Fingerprint: 8F06 5A2E 2735 892B 821C 871A 0411 94EA DB02 E193

Re: Date and Time Picker

-Dy20-Jul-06 2:31

-Dy

20-Jul-06 2:31

goodoljosh1980 wrote:
m_DateTime.GetTime(time);

Is 'time' a CTime object? If it is, it's limited to January 1st, 1970 to January 18th, 2038. Try a COleDateTime object instead, it has a range of January 1st, 100 to December 31st, 9999.

- Dy

Where is the mouse??

Dimitris Vikeloudas20-Jul-06 1:11

Dimitris Vikeloudas

20-Jul-06 1:11

I have an application with plenty of windows. Some of them a re CView subclasses others are controls etc.

My views usually track the mouse using the mouse events like the CWnd::OnMouseMove messages (which I have properly mapped etc).

Reading the OnMouseMove help says that:

'The framework calls this member function when the mouse cursor moves. If the mouse is not captured, the WM_MOUSEMOVE message is received by the CWnd object beneath the mouse cursor; otherwise, the message goes to the window that has captured the mouse.'

I would like to know at a given point where the mouse is, or actually if the recepient of the next mouse input message is the current CWnd or not (i.e. is it still beneath the cursor?).

I 'd like to write code like

MyClass::OnMouseMove(....)<br />
{<br />
   DoMyInitialAction(); //an application action<br />
<br />
   if( MouseInputStillOnMe() ) <br />
     DoSomeOtherAction(....); //another application action<br />
}

If my DoMyInitialAction creates a new view it is likely that the next mouse input message will go on that one. I do not want to capture the mouse and receive any event related to it just in case that the DoMyInitialAction
does that (It's a black box. I do not know what will do).

Thus is it possible to write a MouseInputStillOnMe() query which will not post any message to my message queues but will tell me that under the current circumanstances I 'll receive the next mouse input message?

I assume that I can use the CWnd *CWnd::GetCapture( ) to find if another CWnd in my thread receives the mouse events but this does not answer if my window is still the one beneath the cursor. How do I found if it is?

Thanks a lot for any help....

Dimitris...more you ask, more you learn

Re: Where is the mouse??

Blake Miller20-Jul-06 7:05

Blake Miller

20-Jul-06 7:05

I think you should look into using TrackMouseEvent
The TrackMouseEvent function posts messages when the mouse pointer leaves a window or hovers over a window for a specified amount of time.

I've seen better runs in my shorts! - Patches O'Houlihan

Re: Where is the mouse??

Roger Allen20-Jul-06 11:52

Roger Allen

20-Jul-06 11:52

Or you could make use of the GetCursorPos() function and then indowFromPoint() to find out if the mouse is still over your window or not.

If you vote me down, my score will only get lower

Administrator Privilege [modified]

ragavan19-Jul-06 23:50

ragavan

19-Jul-06 23:50

Hi Does anyone know how to execute an application with built in administrator privilege.

Thanks in advance
-- modified at 5:50 Thursday 20th July, 2006

Re: Administrator Privilege

Naveen19-Jul-06 23:57

Naveen

19-Jul-06 23:57

ragavan wrote:
how to execute an application

execute how....? from the explorer or from another application?

nave

Re: Administrator Privilege

Mike Dimmick20-Jul-06 0:22

Mike Dimmick

20-Jul-06 0:22

You can try CreateProcessWithLogonW. You'll have to prompt the user for the credentials to use.

Stability. What an interesting concept. -- Chris Maunder

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