better support for win7

libs/scrap/src/dxgi/gdi.rs

@@ -13,6 +13,7 @@ use winapi::{
         BITMAPINFO,
         BITMAPINFOHEADER,
         BI_RGB,
+        CAPTUREBLT,
         DIB_RGB_COLORS, //CAPTUREBLT,
         HGDI_ERROR,
         RGBQUAD,
@@ -97,7 +98,7 @@ impl CapturerGDI {
                 self.screen_dc,
                 0,
                 0,
-                SRCCOPY, // | CAPTUREBLT, // CAPTUREBLT enable layered window but also make cursor blinking
+                SRCCOPY | CAPTUREBLT, // CAPTUREBLT enable layered window but also make cursor blinking
             );
             if res == 0 {
                 return Err("Failed to copy screen to Windows buffer".into());