Syntax: BOOL QueryStatus (long nCommand);
Return Value: TRUE if the command is applicable and FALSE otherwise.
nCommand Identifies the command to query status of (see Remarks).
The ELS-QB component supports a variety of commands that can be executed against the current contents of the SQL pane or Result window. These include commands to format the text, cut and paste, select or find and more.The commands are executed by calling the DoCommand() method and passing to it one of the following command IDs of ELS-QB component:
QB_CMD_UNDO = 1,
QB_CMD_REDO = 2,
QB_CMD_CUT = 3,
QB_CMD_COPY = 4,
QB_CMD_PASTE = 5,
QB_CMD_SELECTALL = 6,
QB_CMD_FIND = 7,
QB_CMD_REPLACE = 8,
QB_CMD_PRINT = 9,
QB_CMD_PRINT_PREVIEW = 10,
QB_CMD_PAGE_SETUP = 11
Call this method passing the same command IDs to determine whether the command is valid in the current state of the ELS-QB component, for further conditional execution of the command.The results returned by the method may also be used to update your application's user interface.
Here is an exerpt from ELS_QBDemo project thah illustrates the usage of QueryStatus () method of ELS-QB component.
void CELS_QBDemoView::OnUpdateEditUndo(CCmdUI* pCmdUI)