GetMsgCallbackAttribute
int GetMsgCallbackAttribute (int panelHandle, int messageNumber, int callbackAttribute, int *attributeValue);
Purpose
This function gets an attribute of the callback mechanism linked to the specified message number and panel.
(Linux) This function is not supported.
Parameters
| Input | ||
| Name | Type | Description |
| panelHandle | int | The handle of the panel for which a message–callback is installed. |
| messageNumber | int | The number of the message for whose callback mechanism you wish to get an attribute. |
| callbackAttribute | int | The callback attribute value to obtain. In the function panel, when you click the control or press <Enter>, <Spacebar>, or <Ctrl-down arrow>, a dialog box appears containing a hierarchical list of the available attributes. Attributes whose values cannot be obtained are dimmed. Help text is shown for each attribute. To select an attribute, double-click it or select it and then press <Enter>. If the attribute shown in this ring control has named constants as valid values, you can open a list of them by moving to the Attribute Value control and pressing <Enter>. The Attribute Values dialog box displays the values and value help for the constants. |
| Output | ||
| Name | Type | Description |
| attributeValue | int | The value of the specified callback attribute. If the attribute shown in this control has named constants as valid values, you can open a list of them by pressing <Enter>. The Attribute Values dialog box displays the values and value help for the constants. |
Return Value
| Name | Type | Description |
| status | int | The status code that the function returns. 0 indicates success. A negative value indicates an error. This function may return a Programmer's Toolbox or UI Library error code. Call GetGeneralErrorString to obtain a text description of the error. |
Additional Information
Library: Programmer's Toolbox
Include file: toolbox\toolbox.h
LabWindows/CVI compatibility: LabWindows/CVI 5.5 and later