app_launch/source/main.c

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <3ds.h>
 
int main()
{
 gfxInitDefault();
 consoleInit(GFX_TOP, NULL);
 
 printf("APT chainload example\n");
 printf("Press A to chainload to EUR camera app\n");
 printf("Press START to exit\n");
 
 while (aptMainLoop())
 {
 gspWaitForVBlank();
 gfxSwapBuffers();
 hidScanInput();
 
 u32 kDown = hidKeysDown();
 
 if (kDown & KEY_START)
 break;
 
 if (kDown & KEY_A) // If the A button got pressed, start the app launch
 {
 aptSetChainloader(0x0004001000022400LL, 0); // *EUR* camera app title ID
 break;
 }
 }
 
 gfxExit();
 return 0;
}