Well i know its not C or C++ but i developed a tool in python. (I wouldnt normally use python i would use c but my schools provided laptops block the executable from c. Idk why but i had to use python so i could develop quickly.) Heres the github for it -https://github.com/Headshot56/Pyscii/tree/main . I use pygame alot so its very similar. its pretty drag and drop replacement but it doesnt support drawing a specific texture of characters. It doesnt seem too hard to add but ill do that during the jam. Finally its more of a rendering engine tbh. Thats how i usually gamedev sooooo
Tldr - Try this