GNU/Linux man pages
Livre :
Expressions régulières,
Syntaxe et mise en oeuvre :
GNU/Linux |
RedHat 5.2(Apollo) |
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GetSelect(3) |
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Tk_GetSelection − retrieve the contents of a selection
#include <tk.h>
int
Tk_GetSelection(interp, tkwin, selection, target,
proc, clientData)
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Tcl_Interp *interp (in) |
Interpreter to use for reporting errors. | ||
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Tk_Window tkwin (in) |
Window on whose behalf to retrieve the selection (determines display from which to retrieve). | ||
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Atom selection (in) |
The name of the selection to be retrieved. | ||
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Atom target (in) |
Form in which to retrieve selection. | ||
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Tk_GetSelProc *proc (in) |
Procedure to invoke to process pieces of the selection as they are retrieved. | ||
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ClientData clientData (in) |
Arbitrary one-word value to pass to proc. |
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Tk_GetSelection retrieves the selection specified by the atom selection in the format specified by target. The selection may actually be retrieved in several pieces; as each piece is retrieved, proc is called to process the piece. Proc should have arguments and result that match the type Tk_GetSelProc:
typedef int Tk_GetSelProc(
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ClientData clientData, | ||
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Tcl_Interp *interp, | ||
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char *portion); |
The clientData and interp parameters to proc will be copies of the corresponding arguments to Tk_GetSelection. Portion will be a pointer to a string containing part or all of the selection. For large selections, proc will be called several times with successive portions of the selection. The X Inter-Client Communication Conventions Manual allows a selection to be returned in formats other than strings, e.g. as an array of atoms or integers. If this happens, Tk converts the selection back into a string before calling proc. If a selection is returned as an array of atoms, Tk converts it to a string containing the atom names separated by white space. For any other format besides string, Tk converts a selection to a string containing hexadecimal values separated by white space.
Tk_GetSelection returns to its caller when the selection has been completely retrieved and processed by proc, or when a fatal error has occurred (e.g. the selection owner didn’t respond promptly). Tk_GetSelection normally returns TCL_OK; if an error occurs, it returns TCL_ERROR and leaves an error message in interp->result. Proc should also return either TCL_OK or TCL_ERROR. If proc encounters an error in dealing with the selection, it should leave an error message in interp->result and return TCL_ERROR; this will abort the selection retrieval.
format, get, selection retrieval
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GetSelect(3) | |