我正在使用SDL_ttf,但在mingw32中,我下载所有内容并尝试以下程序
#include <SDL.h>
#include "SDL_ttf.h"
#include <iostream>
using namespace std;
const int window_width = 600;
const int window_height = 600;
TTF_Font *font;
SDL_Surface *screen;
void init(void)
{
SDL_putenv("SDL_VIDEO_CENTERED=center");
if (TTF_Init() == -1)
{
cerr << "Unable to initialize SDL_tff: " << TTF_GetError() << endl;
exit(1);
}
font = TTF_OpenFont("arial.ttf", 12);
if (SDL_Init(SDL_INIT_EVERYTHING) < 0) exit(2);
if ( (screen = SDL_SetVideoMode(window_width, window_height, 8, SDL_HWSURFACE | SDL_DOUBLEBUF)) == NULL) exit(3);
}
void drawText(SDL_Surface *screen, int x, int y, string text)
{
SDL_Color foregroundColor = { 255, 255, 255 };
SDL_Color backgroundColor = { 0, 0, 255 };
SDL_Surface *resulting_text;
SDL_Rect rect = { x, y, 0, 0 };
resulting_text = TTF_RenderText_Solid(font, text.c_str(), foregroundColor);
cout << SDL_GetError();
SDL_BlitSurface(resulting_text, NULL, screen, &rect);
SDL_FreeSurface(resulting_text);
}
void run()
{
SDL_Event event;
bool running = true;
while (running)
{
SDL_LockSurface(screen);
char s[256];
drawText(screen, 20, 20, "text ................");
SDL_UpdateRect(screen, 0, 0, window_width, window_height);
SDL_UnlockSurface(screen);
while (SDL_PollEvent(&event))
{
if (event.type == SDL_KEYDOWN)
{
SDLKey _key = event.key.keysym.sym;
if ((_key == 27) || (_key == 'q') || (_key == 'Q'))
{
running = false;
}
}
}
}
}
int main(int argc,char * argv []) { 在里面(); 跑(); }
好的,所以我在这里发布所有代码。我还将字体文件复制到当前文件夹,但它没有效果,也没有显示任何错误或警告。我使用以下命令在mingw32中编译它
g++ SDLTestFont.cpp -o TF.exe -I"d:\SDL\include" -lmingw32 -lSDLmain
lSDL SDL_ttf.lib -mwindows -O3 -w -static
答案 0 :(得分:1)
看起来你的字体指针没有被初始化,你将垃圾传递给rended_text。我会检查字体文件是否确实在你的项目文件夹中,并确保拼写是准确的。
答案 1 :(得分:0)
我今天遇到了与SDL_ttf类似的问题。 您确定在项目目录中拥有SDL_ttf的所有DLL文件吗? SDL_ttf附带的DLL文件。