WINGs: Marked args as unused for compiler in XDND callback code

The drag-n-drop mechanism is managed by WINGs through callbacks, which
means having a fixed argument list for the handling function.

It is then correct to not use all the arguments, so this patch adds the
appropriate stuff to avoid a false report from compiler.

Signed-off-by: Christophe CURIS <christophe.curis@free.fr>

WINGs/dragdestination.c

@@ -407,6 +407,12 @@ storeDropData(WMView * destView, Atom selection, Atom target, Time timestamp, vo
 	WMDraggingInfo *info = &(scr->dragInfo);
 	WMData *dataToStore = NULL;
 
+	/* Parameter not used, but tell the compiler that it is ok */
+	(void) selection;
+	(void) target;
+	(void) timestamp;
+	(void) cdata;
+
 	if (data != NULL)
 		dataToStore = WMRetainData(data);
 
@@ -888,6 +894,11 @@ void WMUnregisterViewDraggedTypes(WMView * view)
 static WMDragOperationType
 defAllowedOperation(WMView * self, WMDragOperationType requestedOperation, WMArray * sourceDataTypes)
 {
+	/* Parameter not used, but tell the compiler that it is ok */
+	(void) self;
+	(void) requestedOperation;
+	(void) sourceDataTypes;
+
 	/* no operation allowed */
 	return WDOperationNone;
 }
@@ -903,6 +914,11 @@ defAllowedOperation(WMView * self, WMDragOperationType requestedOperation, WMArr
 static WMArray *defRequiredDataTypes(WMView * self,
 				     WMDragOperationType requestedOperation, WMArray * sourceDataTypes)
 {
+	/* Parameter not used, but tell the compiler that it is ok */
+	(void) self;
+	(void) requestedOperation;
+	(void) sourceDataTypes;
+
 	/* no data type allowed (NULL even at 2nd pass) */
 	return NULL;
 }
@@ -912,6 +928,8 @@ static WMArray *defRequiredDataTypes(WMView * self,
  */
 static void defPrepareForDragOperation(WMView * self)
 {
+	/* Parameter not used, but tell the compiler that it is ok */
+	(void) self;
 }
 
 /*
@@ -938,11 +956,18 @@ static void defPrepareForDragOperation(WMView * self)
 static void
 defPerformDragOperation(WMView * self, WMArray * dropDatas, WMArray * operationList, WMPoint * dropLocation)
 {
+	/* Parameter not used, but tell the compiler that it is ok */
+	(void) self;
+	(void) dropDatas;
+	(void) operationList;
+	(void) dropLocation;
 }
 
 /* Executed after drop */
 static void defConcludeDragOperation(WMView * self)
 {
+	/* Parameter not used, but tell the compiler that it is ok */
+	(void) self;
 }
 
 void WMSetViewDragDestinationProcs(WMView * view, WMDragDestinationProcs * procs)

WINGs/dragsource.c

@@ -132,6 +132,10 @@ static WMData *convertSelection(WMView * view, Atom selection, Atom target, void
 	WMData *data;
 	char *typeName;
 
+	/* Parameter not used, but tell the compiler that it is ok */
+	(void) selection;
+	(void) cdata;
+
 	scr = W_VIEW_SCREEN(view);
 	typeName = XGetAtomName(scr->display, target);
 
@@ -151,11 +155,22 @@ static WMData *convertSelection(WMView * view, Atom selection, Atom target, void
 
 static void selectionLost(WMView * view, Atom selection, void *cdata)
 {
+	/* Parameter not used, but tell the compiler that it is ok */
+	(void) view;
+	(void) selection;
+	(void) cdata;
+
 	wwarning("DND selection lost during drag operation...");
 }
 
 static void selectionDone(WMView * view, Atom selection, Atom target, void *cdata)
 {
+	/* Parameter not used, but tell the compiler that it is ok */
+	(void) view;
+	(void) selection;
+	(void) target;
+	(void) cdata;
+
 #ifdef XDND_DEBUG
 	printf("selection done\n");
 #endif
@@ -542,11 +557,17 @@ static void initSourceDragInfo(WMView * sourceView, WMDraggingInfo * info)
  */
 static WMArray *defDropDataTypes(WMView * self)
 {
+	/* Parameter not used, but tell the compiler that it is ok */
+	(void) self;
+
 	return NULL;
 }
 
 static WMDragOperationType defWantedDropOperation(WMView * self)
 {
+	/* Parameter not used, but tell the compiler that it is ok */
+	(void) self;
+
 	return WDOperationNone;
 }
 
@@ -560,15 +581,26 @@ static WMDragOperationType defWantedDropOperation(WMView * self)
 
 static Bool defAcceptDropOperation(WMView * self, WMDragOperationType allowedOperation)
 {
+	/* Parameter not used, but tell the compiler that it is ok */
+	(void) self;
+	(void) allowedOperation;
+
 	return False;
 }
 
 static void defBeganDrag(WMView * self, WMPoint * point)
 {
+	/* Parameter not used, but tell the compiler that it is ok */
+	(void) self;
+	(void) point;
 }
 
 static void defEndedDrag(WMView * self, WMPoint * point, Bool deposited)
 {
+	/* Parameter not used, but tell the compiler that it is ok */
+	(void) self;
+	(void) point;
+	(void) deposited;
 }
 
 /*
@@ -576,6 +608,10 @@ static void defEndedDrag(WMView * self, WMPoint * point, Bool deposited)
  */
 static WMData *defFetchDragData(WMView * self, char *type)
 {
+	/* Parameter not used, but tell the compiler that it is ok */
+	(void) self;
+	(void) type;
+
 	return NULL;
 }
 

WINGs/wcolorwell.c

@@ -279,11 +279,17 @@ static WMArray *dropDataTypes(WMView * self)
 
 static WMDragOperationType wantedDropOperation(WMView * self)
 {
+	/* Parameter not used, but tell the compiler that it is ok */
+	(void) self;
+
 	return WDOperationCopy;
 }
 
 static Bool acceptDropOperation(WMView * self, WMDragOperationType operation)
 {
+	/* Parameter not used, but tell the compiler that it is ok */
+	(void) self;
+
 	return (operation == WDOperationCopy);
 }
 
@@ -292,6 +298,9 @@ static WMData *fetchDragData(WMView * self, char *type)
 	char *color = WMGetColorRGBDescription(((WMColorWell *) self->self)->color);
 	WMData *data;
 
+	/* Parameter not used, but tell the compiler that it is ok */
+	(void) type;
+
 	data = WMCreateDataWithBytes(color, strlen(color) + 1);
 	wfree(color);
 
@@ -388,6 +397,9 @@ static WMArray *requiredDataTypes(WMView * self, WMDragOperationType request, WM
 
 static WMDragOperationType allowedOperation(WMView * self, WMDragOperationType request, WMArray * sourceDataTypes)
 {
+	/* Parameter not used, but tell the compiler that it is ok */
+	(void) self;
+
 	if (dropIsOk(request, sourceDataTypes))
 		return WDOperationCopy;
 	else
@@ -400,6 +412,10 @@ static void performDragOperation(WMView * self, WMArray * dropData, WMArray * op
 	WMColor *color;
 	WMData *data;
 
+	/* Parameter not used, but tell the compiler that it is ok */
+	(void) operations;
+	(void) dropLocation;
+
 	/* only one operation requested (WDOperationCopy) implies only one data */
 	data = (WMData *) WMGetFromArray(dropData, 0);
 

WINGs/wtext.c

@@ -2703,11 +2703,17 @@ static WMArray *dropDataTypes(WMView * self)
 
 static WMDragOperationType wantedDropOperation(WMView * self)
 {
+	/* Parameter not used, but tell the compiler that it is ok */
+	(void) self;
+
 	return WDOperationCopy;
 }
 
 static Bool acceptDropOperation(WMView * self, WMDragOperationType allowedOperation)
 {
+	/* Parameter not used, but tell the compiler that it is ok */
+	(void) self;
+
 	return (allowedOperation == WDOperationCopy);
 }
 
@@ -2746,11 +2752,20 @@ static WMDragSourceProcs _DragSourceProcs = {
 
 static WMArray *requiredDataTypes(WMView * self, WMDragOperationType request, WMArray * sourceDataTypes)
 {
+	/* Parameter not used, but tell the compiler that it is ok */
+	(void) request;
+	(void) sourceDataTypes;
+
 	return ((Text *) self->self)->xdndDestinationTypes;
 }
 
 static WMDragOperationType allowedOperation(WMView * self, WMDragOperationType request, WMArray * sourceDataTypes)
 {
+	/* Parameter not used, but tell the compiler that it is ok */
+	(void) self;
+	(void) request;
+	(void) sourceDataTypes;
+
 	return WDOperationCopy;
 }
 
@@ -2761,6 +2776,10 @@ static void performDragOperation(WMView * self, WMArray * dropData, WMArray * op
 	char *colorName;
 	WMColor *color;
 
+	/* Parameter not used, but tell the compiler that it is ok */
+	(void) operations;
+	(void) dropLocation;
+
 	if (tPtr) {
 
 		/* only one required type, implies only one drop data */