Function call graphs

Expand callers and callees, trace edges, zoom and navigate to source.

Open the call graph

Place the cursor on a C/C++ function, then right-click and run Hornet Show Graph. The graph opens in the bottom Hornet Graph panel, with callers on the left and callees on the right.

Explore the relationships

• Use the plus and minus buttons on either side of a function to expand or collapse that direction.
• Expansion preserves the function's screen position and zoom while arranging new nodes around it.
• The toolbar can expand all, collapse all, refresh or fit the graph to the canvas.
• Drag empty space to pan; use the scroll wheel or toolbar to zoom.
• Double-click a function to jump to its code, or choose Set as Center to explore from another function.

Trace a call

Hover over or click an edge to see a highlight move in the call direction. Click empty space or press Esc to clear the selection. Vertical segments align with the midpoint between adjacent function columns; overlapping edges keep their individual call relationships and highlight paths.

Why relationships may be incomplete

Tag / Flyweight use syntax or lexical analysis and cannot fully resolve macros and types. clangd needs a valid compilation database, include paths and preprocessor macros. If definitions are missing, check thebuild configurationand parsing logs.