emwin transparent bitmap

A. Download Bitmap

https://www.easyicon.net/

2. Open a BmpCvt.exe bitmap, the findings are not transparent bitmaps (Figure 1), but using other tools to open and transparent bitmaps (Figure 2), which is deceptive place

　　　　Figure I Figure II

III. Bitmap modification of PS

 

As FIG transparent bitmap can be displayed, select "Ture color with alpha" when the file can be converted to C