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| Beep | Emits a beep sound form the computer speaker. |
| Close | Closes the current window and restores the context that existed before the window was opened. |
| Confirm | Displays a dialog box that includes a logo, a message, the "Yes", "No" and "Cancel" buttons, and returns the button validated by the user. |
| DisplayLongText | Displays a long text in a text control in Pascal and in C. |
| Displays | Displays a value in a control or assigns a value in a variable. |
| Error | Displays a dialog box containing an error logo and the message passed as parameter. |
| Execute | Runs the code of a control or the code of a procedure in WLanguage. |
| Get | Retrieves the value of a control. |
| Handle | Returns the handle of a window or control. |
| Hourglass | Displays a mouse pointer shaped like an hourglass. |
| HsMenu,Label | Modifies the caption of a menu option. |
| HsMenu,Mark | Finds out whether a menu option is marked or not. |
| HsMenu,Name | Adds a menu into the window that opens. The menu is the menu of another window. |
| HsMenu,Select | Selects or deselects, makes invisible, marks or unmarks an option found in the current menu. |
| HsMenu,Status | Returns the status of a menu option (active, invisible, grayed). |
| Info | Displays a dialog box containing an information logo and the message passed as parameter |
| iPrintReport | Prints a report created with the report editor. |
| LCommand | Returns the command line passed as parameter to the executable program. WdString contains the command line passed as parameter to the executable program (without the name of the executable itself). |
| Library,Disk | Opens the project library that is stored on disk. |
| Library,Error | Loads the file that contains the error messages handled by WDXXXEXE.DLL in the desired language. If no Library, Error is called, the error messages are displayed in French by default. |
| List,Add | Adds an element into a drop-down list or into an expanded list. |
| List,Count | Returns the number of elements found in a list. |
| List,Delete | Deletes an element from a drop-down list or from an expanded list. The elements below move up one row. |
| List,Get | Retrieves the value of a given element or the value of the selected element in a drop-down list or in an expanded list. |
| List,Insert | Inserts an element at the given index of a drop-down or expanded list. |
| List,Modify | Modifies an element in a drop-down list or in an expanded list. |
| List,Position | Sets the position on the first element of the List Box or returns the index of the first element displayed.
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| List,Search | Finds a value in a list. The search performed is an exact-match search. |
| List,Select,- | Deselects an element from a drop-down list or from an expanded list. |
| List,Select,? | Returns the element selected in the list. |
| List,Select,+ | Selects an element in a drop-down list or in an expanded list. This function is mainly used to handle multi-selection list boxes. |
| Message | Displays a message in the status bar |
| Multitask | Allows the programs currently run to process the Windows messages or runs a temporization. |
| Nation | Defines the display language (for the titles, captions, messages, ...) found in the windows and controls. |
| Open | Opens a window. |
| Option,Space | Fills the content of WdString with space characters on the right. |
| Option,Test | In an information window, displays each call to the function and each status report returned by the function. |
| Option,Version | Finds out the version number of WINDEV wd300VM.DLL . |
| Project | Opens and runs a WINDEV project. The first project window is displayed and the input is automatically enabled in this window. |
| Screen,Column | Returns the index of the current column in a Table based on a data file or in a Table populated programmatically. |
| Screen,Coordinate | Retrieves the coordinates of the control in relation to the top left border of the window as well as the physical size of a control. |
| Screen,Current | Retrieves the name of the control being edited and its index, if necessary. |
| Screen,FileToScreen | Updates the controls in the window with the values from the bound items in the data file. |
| Screen,First | Indicates the name of the first editable control or the name of the next control that must be in edit. |
| Screen,Get | Retrieves the value in a control or in a variable. The space characters found at the end of WdString are deleted by default. |
| Screen,Input | Starts the input in the controls of a window. |
| Screen,Next | Returns the name of the next editable control. |
| Screen,Raz | Resets (for a numeric control) or clears (for the other types of controls) the content of the controls found in the current window. The list boxes and the combo boxes cannot be reset to zero. |
| Screen,ScreenToFile | Updates the items in the data file with the values from the bound controls in the window. |
| Screen,Selection | Modifies the status of a control (invisible, active, inactive, grayed). |
| Screen,XVar | Defines whether a control is included (or not) in the current window. |
| SoundInit | Initializes the sound interpreter. This function must be run once in each program. It is used to calibrate the execution speed of the sounds. This function may take a few minutes. |
| Space | Fills the content of WdString with space characters on the right. |
| Style | Loads a style sheet. |
| Table,Add | Adds an element to a Table control. |
| Table,Col | Returns the current index of the column. |
| Table,Count | Returns the number of elements in a Table control. |
| Table,Delete | Deletes an element from a Table control. |
| Table,Display | Refreshes the Table control. The calculated controls are recalculated. The position in the Table control is set according to the current position in the data file. |
| Table,Get | Retrieves the value of a given element or the value of the selected element in a Table control. |
| Table,Insert | Inserts an element at the given index of a Table control. |
| Table,Modify | Modifies an element in a Table control. |
Table,Position
| Sets the position on a given element or returns the element on the fist row of a Table control populated programmatically. |
| Table,Save | Updates or adds a record in the data file linked to the Table control. |
| Table,Search | Searches for a value in a Table control populated programmatically. It is an exact-match search. |
| Table,Select,? | Returns the index of the selected element in a Table control. |
Table,Select,+
| Selects an element in a Table control. |
| Test | Displays each function call and each status report returned by the function. |
| Use | Opens the specified window by closing all the windows opened beforehand. |
| WavPlay | Plays the requested sound. The sound interpreter must be initialized by SoundInit. |
| WDEnd | Ends a program that uses WINDEV. |
| Window | Returns the number of windows opened at a given time. |
Windows,TCurrent
| Modifies the title of the current window. |
| Windows,Title | Modifies the title of the next window (or dialog box) displayed. |
| Windows,TNext | Modifies the title of the next window (or dialog box) displayed. |
| Yes,No | Displays a dialog box that includes a logo, a message and the "Yes" and "No" buttons. The user must validate one of the buttons ("Yes" or "No") to close the window |