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