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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
2026-05-29 19:13:25 +02:00
parent b058f216c4
commit f2daf05bf5
1 changed files with 10 additions and 1 deletions
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src/Fl_win32.cxx
+10 -1
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@@ -1237,6 +1237,7 @@ static BOOL CALLBACK child_window_cb(HWND child_xid, LPARAM data) {
return TRUE;
}
static bool sizing_window = false;
static LRESULT CALLBACK WndProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam) {
@@ -1274,7 +1275,7 @@ static LRESULT CALLBACK WndProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lPar
Fl::screen_driver()->scale(ns, f);
Fl_Window_Driver::driver(window)->resize_after_scale_change(ns, old_f, f);
sd->update_scaling_capability();
} else {
} else if (!sizing_window) {
// Move window to screen with other DPI with mouse or with Windows+Shift+L|R-arrow
Fl_WinAPI_Window_Driver *wd = (Fl_WinAPI_Window_Driver*)Fl_Window_Driver::driver(window);
int olds = window->screen_num();
@@ -1316,6 +1317,9 @@ static LRESULT CALLBACK WndProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lPar
Fl::e_x_root = 1000000;
Fl::modal()->handle(FL_PUSH); // simulate a distant click to close menus
}
} else { // when resizing a window with the mouse
Fl_Window_Driver::driver(window)->screen_num(ns); // Assign window its new new screen (ns)
window->redraw();
}
}
return 0;
@@ -1771,6 +1775,10 @@ content key keyboard layout
Fl_WinAPI_Window_Driver::driver(window)->set_minmax((LPMINMAXINFO)lParam);
break;
case WM_SIZING: // sent to toplevel windows when resized with the mouse
sizing_window = true;
return 1;
case WM_SIZE:
if (!window->parent()) {
Fl_Window_Driver::driver(window)->is_maximized(wParam == SIZE_MAXIMIZED);
@@ -1791,6 +1799,7 @@ content key keyboard layout
}
}
}
sizing_window = false;
return 0;
case WM_MOVING: // sent only to bordered toplevel windows