Fix T65699: gpencil weight paint unresponsive

Referenced by issue #65727, Tooltips in 3d view broken (except view gizmos)
Referenced by issue #65699, GPencil Weight Painting unresponsive
Referenced by issue #63309, Vertex snap malfunction with small dimensions

release/scripts/presets/keyconfig/keymap_data/blender_default.py

@@ -5765,6 +5765,7 @@ def km_3d_view_tool_edit_gpencil_to_sphere(params):
     )
 
 
+# Also used for weight paint.
 def km_3d_view_tool_sculpt_gpencil_paint(_params):
     return (
         "3D View Tool: Sculpt Gpencil, Paint",

release/scripts/startup/bl_ui/space_toolsystem_toolbar.py

@@ -1494,6 +1494,10 @@ class _defs_gpencil_weight:
             icon_prefix="ops.gpencil.sculpt_",
             type=bpy.types.GPencilSculptSettings,
             attr="weight_tool",
+            tooldef_keywords=dict(
+                operator="gpencil.sculpt_paint",
+                keymap="3D View Tool: Sculpt Gpencil, Paint",
+            ),
         )
 
 

source/blender/editors/gpencil/gpencil_brush.c

@@ -2130,6 +2130,7 @@ static int gpsculpt_brush_modal(bContext *C, wmOperator *op, const wmEvent *even
   return OPERATOR_RUNNING_MODAL;
 }
 
+/* Also used for weight paint. */
 void GPENCIL_OT_sculpt_paint(wmOperatorType *ot)
 {
   /* identifiers */