access control using the control panel handle
Is it possible to access the constant name when I only have the panelHandle of the IUR. The control is part of the different project and panelHandle went from the first
project for the second project. Second project now need to set the value of the control, but doesn't have access to the panelHandle of the first project.
TIA
lvrat,
There are two ways to detect certain characteristics of a control during execution. Wolfgang and I were suggesting was something like this (code written in memory: there may be some mistakes in there):
int ctrl, mode, style;
name char [32];
'panelHandel' has received another application
GetPanelAttribute (panelHandle, ATTR_PANEL_FIRST_CTRL, &ctrl);)
all in (ctrl) {}
through the constant name
GetCtrlAttribute (panelhandle, ctrl, ATTR_CONSTANT_NAME, name);
If (! strcmp (name, "NUMERIC1")) {}
}
Else if (! strcmp (name, "NUMERIC2") {})
}
ALTERNATIVE: other discriminatory features in the
GetCtrlAttribute (panelHandle, ctrl, ATTR_CTRL_STYLE);
switch (style) {}
case CTRL_SQUARE_COMMAND_BUTTON:
case CTRL_SQUARE_COMMAND_BUTTON_LS:
GetCtrlAttribute (panelHandel, ctrl, ATTR_CTRL_MODE & mode)
If (mode == VAL_HOT) {}
do something on the control...
}
break;
by default:
do nothing
break;
}
Check to see if there are more controls on the Panel
GetCtrlAttribute (...,..., ATTR_NEXT_CTRL,...);
}
A list of control styles can be found here and in userint.h. Here the list of control modes.
There are many attributes that makes a distinction between controls in a Panel. But doubt principal remains the same: have you tried to access a control from another application through handle Panel CVI?
Tags: NI Software
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