Fixed compiling of three test programs with C++.

test/controllermap.c

@@ -47,7 +47,7 @@ typedef struct MappingStep
 
 
 SDL_Texture *
-LoadTexture(SDL_Renderer *renderer, char *file, SDL_bool transparent)
+LoadTexture(SDL_Renderer *renderer, const char *file, SDL_bool transparent)
 {
     SDL_Surface *temp;
     SDL_Texture *texture;
@@ -226,7 +226,7 @@ WatchJoystick(SDL_Joystick * joystick)
             SDL_RenderCopy(screen, background, NULL, NULL);
             SDL_SetTextureAlphaMod(marker, alpha);
             SDL_SetTextureColorMod(marker, 10, 255, 21);
-            SDL_RenderCopyEx(screen, marker, NULL, &dst, step->angle, NULL, 0);
+            SDL_RenderCopyEx(screen, marker, NULL, &dst, step->angle, NULL, SDL_FLIP_NONE);
             SDL_RenderPresent(screen);
             
             if (SDL_PollEvent(&event)) {

test/testgamecontroller.c

@@ -67,7 +67,7 @@ SDL_bool done = SDL_FALSE;
 SDL_Texture *background, *button, *axis;
 
 static SDL_Texture *
-LoadTexture(SDL_Renderer *renderer, char *file, SDL_bool transparent)
+LoadTexture(SDL_Renderer *renderer, const char *file, SDL_bool transparent)
 {
     SDL_Surface *temp = NULL;
     SDL_Texture *texture = NULL;
@@ -129,7 +129,7 @@ loop(void *arg)
     for (i = 0; i < SDL_CONTROLLER_BUTTON_MAX; ++i) {
         if (SDL_GameControllerGetButton(gamecontroller, (SDL_GameControllerButton)i) == SDL_PRESSED) {
             const SDL_Rect dst = { button_positions[i].x, button_positions[i].y, 50, 50 };
-            SDL_RenderCopyEx(screen, button, NULL, &dst, 0, NULL, 0);
+            SDL_RenderCopyEx(screen, button, NULL, &dst, 0, NULL, SDL_FLIP_NONE);
         }
     }
 
@@ -139,11 +139,11 @@ loop(void *arg)
         if (value < -deadzone) {
             const SDL_Rect dst = { axis_positions[i].x, axis_positions[i].y, 50, 50 };
             const double angle = axis_positions[i].angle;
-            SDL_RenderCopyEx(screen, axis, NULL, &dst, angle, NULL, 0);
+            SDL_RenderCopyEx(screen, axis, NULL, &dst, angle, NULL, SDL_FLIP_NONE);
         } else if (value > deadzone) {
             const SDL_Rect dst = { axis_positions[i].x, axis_positions[i].y, 50, 50 };
             const double angle = axis_positions[i].angle + 180.0;
-            SDL_RenderCopyEx(screen, axis, NULL, &dst, angle, NULL, 0);
+            SDL_RenderCopyEx(screen, axis, NULL, &dst, angle, NULL, SDL_FLIP_NONE);
         }
     }
 

test/testrendercopyex.c

@@ -45,7 +45,7 @@ quit(int rc)
 }
 
 SDL_Texture *
-LoadTexture(SDL_Renderer *renderer, char *file, SDL_bool transparent)
+LoadTexture(SDL_Renderer *renderer, const char *file, SDL_bool transparent)
 {
     SDL_Surface *temp;
     SDL_Texture *texture;
@@ -126,7 +126,7 @@ Draw(DrawState *s)
     s->sprite_rect.x = (viewport.w - s->sprite_rect.w) / 2;
     s->sprite_rect.y = (viewport.h - s->sprite_rect.h) / 2;
 
-    SDL_RenderCopyEx(s->renderer, s->sprite, NULL, &s->sprite_rect, (double)s->sprite_rect.w, center, s->scale_direction);
+    SDL_RenderCopyEx(s->renderer, s->sprite, NULL, &s->sprite_rect, (double)s->sprite_rect.w, center, (SDL_RendererFlip)s->scale_direction);
 
     SDL_SetRenderTarget(s->renderer, NULL);
     SDL_RenderCopy(s->renderer, target, NULL, NULL);