IDirect3DDevice9::Present
DX9 vtable[17] → HRESULT
IDirect3DDevice9::Present is a method of the COM interface IDirect3DDevice9 in Direct3D 9. Its function pointer sits at vtable index 17 — the zero-based slot in that interface's virtual method table, counted from QueryInterface and including every entry inherited from a base interface. It takes 4 parameters (src_rect, dst_rect, dst_window_override, dirty_region) and returns HRESULT.
COM methods are reached through that table rather than by an exported name, so the slot index is what a wrapper, an interface hook or a disassembly listing has to resolve against. The parameter order and types below are the ones this interface declares.
Parameters (4)
| # | Name | Type |
|---|---|---|
| 0 | src_rect | const RECT |
| 1 | dst_rect | const RECT |
| 2 | dst_window_override | HWND |
| 3 | dirty_region | const RGNDATA |