This repository has been archived on 2024-12-16. You can view files and clone it, but cannot push or open issues or pull requests.
CodeBlocksPortable/WATCOM/samples/win/datactl/float.c

58 lines
1.4 KiB
C
Raw Normal View History

#include <windows.h>
#include <stdio.h>
#include <string.h>
#include "ctltype.h"
BOOL ctl_float_start( ctl_elt *elt, HANDLE inst, HWND dlg, void *ptr )
/********************************************************************/
/* start a float field */
{
char buf[50];
char *str;
int dec;
float value;
inst = inst;
value = _value_float( ptr, elt );
sprintf( buf, "%f", value );
for( str = buf + strlen( buf ) - 1; *str == '0'; --str );
for( dec = 0; *str != '.'; --str, ++dec );
if( dec < 2 ) {
dec = 2;
}
sprintf( buf, "%-.*f", dec, value );
SetDlgItemText( dlg, elt->control, buf );
return( TRUE );
}
BOOL ctl_float_finish( ctl_elt *elt, HANDLE inst, HWND dlg, void *ptr )
/*********************************************************************/
/* end a float field */
{
char str[50];
float value;
inst = inst;
GetDlgItemText( dlg, elt->control, str, 50 );
str[49] = '\0';
if( 1 == sscanf( str, "%f", &value ) ) {
_value_float( ptr, elt ) = value;
} else {
SetFocus( GetDlgItem( dlg, elt->control ) );
MessageBox( dlg, "Invalid value: please re-enter it", NULL,
MB_APPLMODAL | MB_ICONHAND | MB_OK );
return( FALSE );
}
return( TRUE );
}