segatools2/gfxhook/gfx.c

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#include <windows.h>
#include <assert.h>
#include <stdlib.h>
#include "gfxhook/gfx.h"
#include "hook/table.h"
#include "util/dprintf.h"
typedef BOOL (WINAPI *ShowWindow_t)(HWND hWnd, int nCmdShow);
static BOOL WINAPI hook_ShowWindow(HWND hWnd, int nCmdShow);
static struct gfx_config gfx_config;
static ShowWindow_t next_ShowWindow;
static const struct hook_symbol gfx_hooks[] = {
{
.name = "ShowWindow",
.patch = hook_ShowWindow,
.link = (void **) &next_ShowWindow,
},
};
void gfx_hook_init(const struct gfx_config *cfg)
{
assert(cfg != NULL);
if (!cfg->enable) {
return;
}
memcpy(&gfx_config, cfg, sizeof(*cfg));
hook_table_apply(NULL, "user32.dll", gfx_hooks, _countof(gfx_hooks));
}
static BOOL WINAPI hook_ShowWindow(HWND hWnd, int nCmdShow)
{
dprintf("Gfx: ShowWindow hook hit\n");
if (!gfx_config.framed && nCmdShow == SW_RESTORE) {
nCmdShow = SW_SHOW;
}
return next_ShowWindow(hWnd, nCmdShow);
}