R语言实用pheatmap函数时保存为bmp文件报错

pheatmap(res_es,show_colnames = F,cluster_rows = F,cluster_cols = F,annotation_col = annotation_col,cellwidth = 5,cellheight = 5,fontsize = 5,gaps_row = c(12,20),filename = "C:\Users\FISH\Desktop\ssgsea.bmp")
Error in bmp(x, units = "in", res = 300, ...) : 无法启动bmp()装置
In addition: Warning messages:
1: In bmp(x, units = "in", res = 300, ...) : 无法分配bitmap
2: In bmp(x, units = "in", res = 300, ...) : opening device failed