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Windows: improve support of window resize across screens with distinct DPI (#1439)
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This commit is contained in:
ManoloFLTK
2026-05-30 09:06:08 +02:00
parent f2daf05bf5
commit b8ccd16eb8
1 changed files with 10 additions and 1 deletions
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src/Fl_win32.cxx
+10 -1
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@@ -1775,9 +1775,18 @@ content key keyboard layout
Fl_WinAPI_Window_Driver::driver(window)->set_minmax((LPMINMAXINFO)lParam); Fl_WinAPI_Window_Driver::driver(window)->set_minmax((LPMINMAXINFO)lParam);
break; break;
case WM_SIZING: // sent to toplevel windows when resized with the mouse case WM_SIZING: { // sent to toplevel windows when resized with the mouse
sizing_window = true; sizing_window = true;
RECT *r = (RECT*)lParam;
int ctrX = (r->left + r->right)/2, ctrY = (r->top + r->bottom)/2;
Fl_WinAPI_Screen_Driver *sd = (Fl_WinAPI_Screen_Driver *)Fl::screen_driver();
int ns = sd->screen_num_unscaled(ctrX, ctrY); // screen number after size change
int olds = window->screen_num(); // screen number before size change
if (ns != olds && sd->dpi[ns][0] == sd->dpi[olds][0]) { // When both screens have same DPI,
Fl_Window_Driver::driver(window)->screen_num(ns); // assign window to new screen here.
}
return 1; return 1;
}
case WM_SIZE: case WM_SIZE:
if (!window->parent()) { if (!window->parent()) {