Questions about drawing graphics on Form

ghyphoenix

I used this statement to draw a picture on the Form (the picture was drawn in pMetafile in advance, and it is correct).


From1-> Canvas-> Draw (0,0, pMetafile);


However, in the execution, once this From is blocked by other windows, the blocked part's graphics will disappear! !!
How to solve this problem?

Thank you

epsilong123

After losing focus, redraw

zhongshuan

From1->Canvas->Draw(0,0,pMetafile) in onpaint;