mirrors/imgui
1
0
Fork 0
mirror of https://github.com/ocornut/imgui.git synced 2025-09-07 11:58:22 +00:00
Code Issues Packages Projects Releases Wiki Activity

Backends: Win32: Viewports: handle WM_DPICHANGED in backend when ImGuiConfigFlags_DpiEnableScaleViewports flag is enabled.

Browse Source
This commit is contained in:
ocornut
2025-06-02 19:08:45 +02:00
parent ac6b84a7d7
commit a92b53df7b
5 changed files with 17 additions and 29 deletions
Download Patch File Download Diff File Expand all files Collapse all files

13
examples/example_win32_directx11/main.cpp
View File

@@ -264,10 +264,6 @@ void CleanupRenderTarget()
if (g_mainRenderTargetView) { g_mainRenderTargetView->Release(); g_mainRenderTargetView = nullptr; }
}
#ifndef WM_DPICHANGED
#define WM_DPICHANGED 0x02E0 // From Windows SDK 8.1+ headers
#endif
// Forward declare message handler from imgui_impl_win32.cpp
extern IMGUI_IMPL_API LRESULT ImGui_ImplWin32_WndProcHandler(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam);
@@ -296,15 +292,6 @@ LRESULT WINAPI WndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
case WM_DESTROY:
::PostQuitMessage(0);
return 0;
case WM_DPICHANGED:
if (ImGui::GetIO().ConfigFlags & ImGuiConfigFlags_DpiEnableScaleViewports)
{
//const int dpi = HIWORD(wParam);
//printf("WM_DPICHANGED to %d (%.0f%%)\n", dpi, (float)dpi / 96.0f * 100.0f);
const RECT* suggested_rect = (RECT*)lParam;
::SetWindowPos(hWnd, nullptr, suggested_rect->left, suggested_rect->top, suggested_rect->right - suggested_rect->left, suggested_rect->bottom - suggested_rect->top, SWP_NOZORDER | SWP_NOACTIVATE);
}
break;
}
return ::DefWindowProcW(hWnd, msg, wParam, lParam);
}