diff options
Diffstat (limited to 'src/Fl_Double_Window.cxx')
| -rw-r--r-- | src/Fl_Double_Window.cxx | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/src/Fl_Double_Window.cxx b/src/Fl_Double_Window.cxx index 4f87f0bc3..e648fa4ab 100644 --- a/src/Fl_Double_Window.cxx +++ b/src/Fl_Double_Window.cxx @@ -87,7 +87,6 @@ static fl_alpha_blend_func fl_alpha_blend = NULL; * and finds the required function if so. */ char fl_can_do_alpha_blending() { - return 0; static char been_here = 0; static char can_do = 0; if (been_here) return can_do; @@ -111,8 +110,16 @@ HDC fl_makeDC(HBITMAP bitmap) { } void fl_copy_offscreen(int x,int y,int w,int h,HBITMAP bitmap,int srcx,int srcy) { - static FL_BLENDFUNCTION blendfunc = { 0, 0, 255, 1}; + HDC new_gc = CreateCompatibleDC(fl_gc); + int save = SaveDC(new_gc); + SelectObject(new_gc, bitmap); + BitBlt(fl_gc, x, y, w, h, new_gc, srcx, srcy, SRCCOPY); + RestoreDC(new_gc, save); + DeleteDC(new_gc); +} +void fl_copy_offscreen_with_alpha(int x,int y,int w,int h,HBITMAP bitmap,int srcx,int srcy) { + static FL_BLENDFUNCTION blendfunc = { 0, 0, 255, 1}; HDC new_gc = CreateCompatibleDC(fl_gc); int save = SaveDC(new_gc); SelectObject(new_gc, bitmap); |