| DialogAddDynamicRequest | Function (Macro)

dialogs.h

HANDLE DialogAddDynamicRequest (HANDLE Handle, short flags, short x, short y, const char *label, unsigned short width);

Adds a request/edit box with a dynamic buffer into a dialog box.

DialogAddDynamicRequest adds a request box (i.e. an input line edit box) with a dynamic buffer to the dialog structure associated with the handle Handle at the position (x,y), where the coordinates are relative to the top-left corner of the dialog box. An optional label label will appear in front of the request box. An empty string, "", is used to indicate no label.
Items created with DialogAddDynamicRequest doesn't use the RequestBuffer array passed to the Dialog function, so they do not need the offset and MaxLen values like normal edit items as described in DialogAddRequestEx. Instead, the callback function (see DialogNew for more information) is called with the first parameter equal to DB_GET_EDIT_HANDLE and the second parameter equal to the item's identification number. The callback should then return the handle of an edit buffer of at least width bytes long. width determines the actual width of the request box (This is very useful when you need to prevent the user from overstepping a special size such as file names). It will be such that the widest string made of width characters may fit into the box. So, the real width of box in pixels will be width*6, because the widest character 'M' is 6 pixels wide. If you try to enter a string with more than width characters, the system will prevent you from doing so. If width is wider than the actually available width of the dialog box, the request box will be truncated at the edge of the dialog box.
The order of item creation is very important, as it automatically gives each item an identification number (the first created item will get an identification number of 0, the second one will get 1, and so on). Every function that creates an item (i.e. every function beginning with 'DialogAdd...') will increase this identification number.
The parameter flags can be a combination of the following, defined in the DialogFlags enumeration:

DF_SCROLLABLE | Set this flag if you want this item to be scrollable in a scroll region.
DF_SKIP | This item is skipped when browsing through items with the arrow keys.
DF_SCREEN_SAVE | The dialog code saves the area underneath the dialog box when it is started, DB_MEMFULL returned if it cannot. If you wish to use this flag, you must then set it with the first item you created in the dialog box.
DF_TAB_ELLIPSES | Lines the item up on the right side of the dialog, and draws '......' between the item and its label. This flag is used in the TIOS 'MODE' dialog, for example. (It is the default on AMS 1.xx. See the note below for more information.)
DF_TAB_SPACES | AMS 2.00 or higher: Like DF_TAB_ELLIPSES, but does not draw any dots.

Note: On AMS 1.xx, all request boxes in one dialog box will be aligned according to the request box which has the longest label, except when the label string finishes with a '`' character (code 96). In such case, the request box will start immediately after the label string ('`' is a special character, which will not be displayed). When the label doesn't end with '`', it can be padded with '.' characters up to the length of the longest label, except if the label finishes with ':': In that case, the label will be padded with space characters (':' will also be displayed).
DialogAddDynamicRequest returns H_NULL in case of an error, may return DB_MEMFULL if you used DF_SCREEN_SAVE, else returns Handle. This routine (as well as all other 'DialogAdd...' routines) may cause heap compression.
DialogAddDynamicRequest is in fact a macro created for your convenience. It calls DialogAdd with D_HEDIT as the ItemType parameter.

Uses: DialogAdd