C / C++ / MFC

Re: How to adapt window size to screen resolution

2-Jun-03 9:44

I would do it like this:

RECT rc;
SystemParametersInfo(SPI_GETWORKAREA, 0, &rc, 0);

-Dominik

_outp(0x64, 0xAD);
and
__asm mov al, 0xAD __asm out 0x64, al
do the same... but what do they do??

gmlnd2-Jun-03 10:00

gmlnd

2-Jun-03 10:00

I tried this, but it still will not adapt to different screen resolution. Is it okay to have GetSystemMetrics in MainFrame?

void CMainFrame::OnMove(int x, int y)
{

Rect rc;
SystemParametersInfo(SPI_GETWORKAREA,0,&rc,0);

}

Disabling checkbox

dorkshoe2-Jun-03 8:55

dorkshoe

2-Jun-03 8:55

Does anyone know how to disable a checkbox without disabling its text? I want the box disabled but the text to be normal. Basically so it looks like a regular checkbox you have no control over.

-dork

Dominik Reichl2-Jun-03 9:42

2-Jun-03 9:42

I would just introduce an internal flag which indicates if the checkbox is disabled or not. Then implement a callback function which gets called when the state of the checkbox changes. UpdateData(TRUE). If the checkbox flag indicates disabled, invert the current state, else not.

Big Grin | :-D

-Dominik

_outp(0x64, 0xAD);
and
__asm mov al, 0xAD __asm out 0x64, al
do the same... but what do they do??

abc8762-Jun-03 9:56

abc876

2-Jun-03 9:56

Dominik Reichl wrote:
If the checkbox flag indicates disabled, invert the current state, else not.

this would enable the checkbox if it is disabled. this is not what he wants. he wants that check box is disabled but its text appears as enabled i.e checkbox is no longer able to respond to user but its text appears as enabled.

Muhammad Shoaib Khan
http://geocities.com/lansolution

Dominik Reichl2-Jun-03 20:35

2-Jun-03 20:35

M.Shoaib Khan wrote:
this would enable the checkbox if it is disabled.

Nope. You make a call to the UpdateData(TRUE) function. Therefor the member variable for the checkbox contains the _new_ state of the checkbox. If you want to ignore the change, you therefor have to invert the state now.

Big Grin | :-D

-Dominik

_outp(0x64, 0xAD);
and
__asm mov al, 0xAD __asm out 0x64, al
do the same... but what do they do??

abc8762-Jun-03 9:50

abc876

2-Jun-03 9:50

You can derive class from CButton. In your derived class, provide a function in which u create a static control and places it just over the text area of your check box. Use GetWindowText or any other function to get combo box text.
Provide your own function for enabling and disabling in which after calling base class implementation, redraw static control. i hope that works.

Muhammad Shoaib Khan
http://geocities.com/lansolution

HICON to HBITMAP?

Dave_2-Jun-03 7:50

Dave_

2-Jun-03 7:50

I need a HBITMAP to add a bitmap to a toolbar and menu. I can get an HICON from the .exe's that contain the images, but I'm not sure if there is a simple way to get an HBITMAP from the HICON without going through the whole bitblt process.

Any idea if there is a fairly simple way to do this?

Thank you,

Dave

Re: HICON to HBITMAP?

Dominik Reichl2-Jun-03 8:43

Problem with SQLColumns in ODBC API

2-Jun-03 8:43

I am not sure, but perhaps you should have a look at the GetIconInfo Windows API function. This function gives you an ICONINFO struct which contains HBITMAP handles to the color and the mask bitmap.

If you use GetIconInfo you have to delete the handles to the two newly created bitmaps yourself. Read MSDN for more.

-Dominik

_outp(0x64, 0xAD);
and
__asm mov al, 0xAD __asm out 0x64, al
do the same... but what do they do??

WinRTP and CE

javigimenez2-Jun-03 6:53

javigimenez

2-Jun-03 6:53

Hi everybody
I'm developing an application for my final thesis. I need to use a Real Time transport protocol to carry some data from a PC to a PDA (Pocket PC). I thought maybe WinRTP could work in the PDA side, but I don't find the "CE version". Actually, i don't even know if it does exist. If it does, where can I find it? and maybe some examples...if it doesn't, any idea what other real time protocol could i use?
Thank you all in advance,
Javi

insanely4202-Jun-03 6:48

insanely420

2-Jun-03 6:48

Greetings

I am writing an app to import data from an Access DB. I am fetching the information about columns of a table by using the following method -

SQLCHAR colname[SIZE_128+1]={0};
SQLINTEGER colsize=0;
SQLSMALLINT decimaldigit=0;

// allocate.
VERIFY ( (retcode = SQLAllocHandle ( SQL_HANDLE_STMT, sqlhdbc, &hstmt )) == SQL_SUCCESS );
retcode = SQLColumns ( hstmt, NULL, 0, NULL, 0, (SQLCHAR*)szTable, SQL_NTS, NULL, 0 );

if (retcode == SQL_SUCCESS || retcode == SQL_SUCCESS_WITH_INFO) {

/* Bind columns in result set to buffers */
SQLBindCol(hstmt, 4, SQL_C_CHAR, colname, SIZE_128, &size );
SQLBindCol(hstmt, 7, SQL_C_SLONG, &colsize, 0, &size );
SQLBindCol(hstmt, 9, SQL_C_SSHORT, &decimaldigit, 0, &decsize );

}

while( TRUE )
{
retcode = SQLFetch(hstmt);

if ( retcode == SQL_SUCCESS || retcode == SQL_SUCCESS_WITH_INFO ) {
// do stuff
} else {
break;
}
}

Now the problem is that even if a column is defined as DOUBLE in Access and has data like 2.345, 3.001, 0.0001 etc.
The decimaldigit is always returned with value 0. Therefore I am not able to get the correct decimal point for the column.

So instead of getting colsize = 15 and decimaldigit = 2, I am always getting colsize = 15 and decimaldigit = 0?

Am I doing something wrong?

Thanks in advance.

Karam

David Crow2-Jun-03 7:17

2-Jun-03 7:17

Perhaps you should have something like:

SQL_C_DOUBLE decimaldigit;<br />
SQLBindCol(hstmt, 9, SQL_C_DOUBLE, &decimaldigit, 0, &decsize);

insanely4202-Jun-03 8:13

insanely420

2-Jun-03 8:13

SQL_C_DOUBLE is defined as 8. So I used

SQLDOUBLE decimaldigit;
SQLBindCOl ( hstmt, 9, SQL_C_DOUBLE, &decimaldigit, 0, &decsize );

For the double column the decimaldigit value is 0.000000000 and decsize it is -1.

I am confused. Even the MSDN docs tell me to use the function this way Confused | :confused:

Anonymous2-Jun-03 9:24

Anonymous

2-Jun-03 9:24

I have never been a fan of SQLColumns.... usually I just do a 'select * from <tablename> where 1=0' and use the following fcns to get metadata (sorry for the code bloat...):

short DBStatement::GetColDBType(int iColumnNum)
{
short iStatus;
char caDummy[2];
short iDummy;
long lColType = -1;

if (m_hStmtHdl)
{
ResetError();

iStatus = ::SQLColAttributes(m_hStmtHdl,(UWORD)iColumnNum,(UWORD)SQL_COLUMN_TYPE,(PTR)caDummy,(SWORD)1,(SWORD *)&iDummy,(SDWORD *)&lColType);
if (iStatus != SQL_SUCCESS && iStatus != SQL_SUCCESS_WITH_INFO)
{
UpdateDBError();
lColType = -1;
}
}
else
NoActiveStatement();

return (short)lColType;
}

LPSTR DBStatement::GetColName(int iColumnNum)
{
short iStatus;
long lDummy;
short iDummy;

InitDataBuffer();

if (m_hStmtHdl)
{
ResetError();

iStatus = ::SQLColAttributes(m_hStmtHdl,(UWORD)iColumnNum,(UWORD)SQL_COLUMN_NAME,(PTR)m_caDataBuf,(SWORD)1000,(SWORD *)&iDummy,(SDWORD *)&lDummy);
if (iStatus != SQL_SUCCESS && iStatus != SQL_SUCCESS_WITH_INFO)
{
UpdateDBError();
m_caDataBuf[0] = 0;
}
}
else
NoActiveStatement();

return m_caDataBuf;
}

long DBStatement::GetColWidth(int iColumnNum)
{
short iStatus;
char caDummy[2];
long lColWidth = -1;
short iDummy;

if (m_hStmtHdl)
{
ResetError();

iStatus = ::SQLColAttributes(m_hStmtHdl,(UWORD)iColumnNum,(UWORD)SQL_COLUMN_LENGTH,(PTR)caDummy,(SWORD)1,(SWORD *)&iDummy,(SDWORD *)&lColWidth);
if (iStatus != SQL_SUCCESS && iStatus != SQL_SUCCESS_WITH_INFO)
UpdateDBError();
}
else
NoActiveStatement();

return lColWidth;
}

int DBStatement::GetNumCols()
{
short iStatus;
short iRetval = -1;

if (m_hStmtHdl)
{
ResetError();

iStatus = ::SQLNumResultCols(m_hStmtHdl,(short *)&iRetval);
if (iStatus != SQL_SUCCESS && iStatus != SQL_SUCCESS_WITH_INFO)
UpdateDBError();
}
else
NoActiveStatement();

return (int)iRetval;
}

basementman2-Jun-03 9:25

basementman

2-Jun-03 9:25

The point being that you can develop a generic function to return your metadata using the SQLColAttributes ODBC call.

CLabel with tooltips

doctorpi2-Jun-03 6:05

Silly question about repaint

2-Jun-03 6:05

Hi guys
Somebody knows how to add the tooltip feature to the CLabel class that is here in Codeproject (SledgeHammer did this class). I've tried a solution but it doesn't work.
Best Regards
Dr.Pi

doctorpi2-Jun-03 6:00

2-Jun-03 6:00

Hi guys
I've got an SDI app and from the View window I call a Modal Dialog.
When this dialog opens, the underneath view is not refreshed (all text is unreadable).
What I have to do to repaint the view meantime I am in the modal dialog?

Best Regards
Dr.Pi

valikac2-Jun-03 6:46

valikac

2-Jun-03 6:46

One solution is Invalidate().

Kuphryn

David Crow2-Jun-03 6:49

2-Jun-03 6:49

I've got the same thing with one of my SDI apps, but it works fine. What styles are you using to create the dialog with?

doctorpi2-Jun-03 7:00

2-Jun-03 7:00

Hi David
My styles are

Style : Child
Border : None

Nothing more checked in this dialog.

Hi Kuphryn
Where I have to put the Invalidate() meantime I am in the modal dialog?

Bsst Regards

David Crow2-Jun-03 7:02

2-Jun-03 7:02

Just for grins, change the style to Popup and see what happens.

doctorpi2-Jun-03 7:09

2-Jun-03 7:09

Hi guys
I've discovered part of the problem.
I'm using CLabel class and when is repainted when the modal dialog is open the values are centered instead that left aligned amd made me thing that I had a repaint problem.
I don't know where could be the problem. I'll try to find.
Thanks
Dr.Pi

David Crow2-Jun-03 7:19