我尝试在sqlite3_bind_blob中保存一个simpel结构(vector3),但我不知道它是如何工作的.如果我调试此代码,控制台窗口崩溃.我该如何解决这个问题?
struct vector3
{
int X;
int Y;
int Z;
};
int main ()
{
sqlite3 *db = NULL;
sqlite3_stmt *res = NULL;
sqlite3_open_v2("SaveGame1.sav", &db, SQLITE_OPEN_READWRITE|SQLITE_OPEN_CREATE, NULL);
string query = "CREATE TABLE IF NOT EXISTS TestPlayer (vector BLOB)";
sqlite3_prepare_v2 (db, query.c_str(), query.length(), &res, 0);
sqlite3_step(res);
// Try to add mij struct
vector3 MyLocation;
MyLocation.X = 100;
MyLocation.Y = 100;
MyLocation.Z = 100;
query = "INSERT INTO TestPlayer (location) VALUES (?);";
sqlite3_prepare_v2 (db, query.c_str(), query.length(), &res, 0);
sqlite3_bind_blob (res, 1, &MyLocation, sizeof(vector3), SQLITE_TRANSIENT);
sqlite3_step(res);
query = "SELECT * FROM TestPlayer;";
sqlite3_prepare_v2 (db, query.c_str(), query.length(), &res, 0);
sqlite3_step(res);
const vector3 *GetLoc = (const vector3 *) sqlite3_column_blob(res, 0);
cout << GetLoc->X << endl;
sqlite3_finalize(res);
sqlite3_close(db);
return 0;
}
最佳答案 我相信必须在查询操作的结果上使用sqlite3_column_blob().尝试为刚刚插入的数据发出查询