Index: draw.h
===================================================================
--- draw.h	(revision 21189)
+++ draw.h	(revision 21190)
@@ -172,4 +172,13 @@
 
 #define PCB_DRAW_TERM_GFX_WIDTH (-3)
 
+/* Normal expose: draw all layers with all flags (no .content is used) */
+void pcb_hid_expose_all(pcb_hid_t *hid, const pcb_hid_expose_ctx_t *region, pcb_xform_t *xform_caller);
+
+/* Layer preview expose: draws a single layer; content.layer_id is used */
+void pcb_hid_expose_layer(pcb_hid_t *hid, const pcb_hid_expose_ctx_t *ly);
+
+/* generic, dialog/callbakc based preview expose */
+void pcb_hid_expose_generic(pcb_hid_t *hid, const pcb_hid_expose_ctx_t *e);
+
 #endif