// dear imgui: standalone example application for DirectX 9 // If you are new to dear imgui, see examples/README.txt and documentation at the top of imgui.cpp. #include "imgui.h" #include "imgui_impl_dx9.h" #include "imgui_impl_win32.h" #include <d3d9.h> #define DIRECTINPUT_VERSION 0x0800 #include <dinput.h> #include <tchar.h> // Data static LPDIRECT3D9 g_pD3D = NULL; static LPDIRECT3DDEVICE9 g_pd3dDevice = NULL; static D3DPRESENT_PARAMETERS g_d3dpp = {}; // Forward declarations of helper functions bool CreateDeviceD3D(HWND hWnd); void CleanupDeviceD3D(); void ResetDevice(); LRESULT WINAPI WndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam); // Main code int main(int, char**) { ImGui_ImplWin32_EnableDpiAwareness(); // Create application window WNDCLASSEX wc = { sizeof(WNDCLASSEX), CS_CLASSDC, WndProc, 0L, 0L, GetModuleHandle(NULL), NULL, NULL, NULL, NULL, _T("ImGui Example"), NULL }; ::RegisterClassEx(&wc); HWND hwnd = ::CreateWindow(wc.lpszClassName, _T("Dear ImGui DirectX9 Example"), WS_OVERLAPPEDWINDOW, 100, 100, 1280, 800, NULL, NULL, wc.hInstance, NULL); // Initialize Direct3D if (!CreateDeviceD3D(hwnd)) { CleanupDeviceD3D(); ::UnregisterClass(wc.lpszClassName, wc.hInstance); return 1; } // Show the window ::ShowWindow(hwnd, SW_SHOWDEFAULT); ::UpdateWindow(hwnd); // Setup Dear ImGui context IMGUI_CHECKVERSION(); ImGui::CreateContext(); ImGuiIO& io = ImGui::GetIO(); (void)io; io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard; // Enable Keyboard Controls //io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad; // Enable Gamepad Controls io.ConfigFlags |= ImGuiConfigFlags_DockingEnable; // Enable Docking io.ConfigFlags |= ImGuiConfigFlags_ViewportsEnable; // Enable Multi-Viewport / Platform Windows //io.ConfigViewportsNoAutoMerge = true; //io.ConfigViewportsNoTaskBarIcon = true; // Setup Dear ImGui style ImGui::StyleColorsDark(); //ImGui::StyleColorsClassic(); // When viewports are enabled we tweak WindowRounding/WindowBg so platform windows can look identical to regular ones. ImGuiStyle& style = ImGui::GetStyle(); if (io.ConfigFlags & ImGuiConfigFlags_ViewportsEnable) { style.WindowRounding = 0.0f; style.Colors[ImGuiCol_WindowBg].w = 1.0f; } // Setup Platform/Renderer bindings ImGui_ImplWin32_Init(hwnd); ImGui_ImplDX9_Init(g_pd3dDevice); // Load Fonts // - If no fonts are loaded, dear imgui will use the default font. You can also load multiple fonts and use ImGui::PushFont()/PopFont() to select them. // - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple. // - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit). // - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call. // - Read 'misc/fonts/README.txt' for more instructions and details. // - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ ! //io.Fonts->AddFontDefault(); //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf", 16.0f); //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Cousine-Regular.ttf", 15.0f); //io.Fonts->AddFontFromFileTTF("../../misc/fonts/DroidSans.ttf", 16.0f); //io.Fonts->AddFontFromFileTTF("../../misc/fonts/ProggyTiny.ttf", 10.0f); //ImFont* font = io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, NULL, io.Fonts->GetGlyphRangesJapanese()); //IM_ASSERT(font != NULL); // Our state bool show_demo_window = true; bool show_another_window = false; ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f); // Main loop MSG msg; ZeroMemory(&msg, sizeof(msg)); while (msg.message != WM_QUIT) { // Poll and handle messages (inputs, window resize, etc.) // You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs. // - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application. // - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application. // Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags. if (::PeekMessage(&msg, NULL, 0U, 0U, PM_REMOVE)) { ::TranslateMessage(&msg); ::DispatchMessage(&msg); continue; } // Start the Dear ImGui frame ImGui_ImplDX9_NewFrame(); ImGui_ImplWin32_NewFrame(); ImGui::NewFrame(); // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!). if (show_demo_window) ImGui::ShowDemoWindow(&show_demo_window); // 2. Show a simple window that we create ourselves. We use a Begin/End pair to created a named window. { static float f = 0.0f; static int counter = 0; ImGui::Begin("Hello, world!"); // Create a window called "Hello, world!" and append into it. ImGui::Text("This is some useful text."); // Display some text (you can use a format strings too) ImGui::Checkbox("Demo Window", &show_demo_window); // Edit bools storing our window open/close state ImGui::Checkbox("Another Window", &show_another_window); ImGui::SliderFloat("float", &f, 0.0f, 1.0f); // Edit 1 float using a slider from 0.0f to 1.0f ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color if (ImGui::Button("Button")) // Buttons return true when clicked (most widgets return true when edited/activated) counter++; ImGui::SameLine(); ImGui::Text("counter = %d", counter); ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate); ImGui::End(); } // 3. Show another simple window. if (show_another_window) { ImGui::Begin("Another Window", &show_another_window); // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked) ImGui::Text("Hello from another window!"); if (ImGui::Button("Close Me")) show_another_window = false; ImGui::End(); } // Rendering ImGui::EndFrame(); g_pd3dDevice->SetRenderState(D3DRS_ZENABLE, false); g_pd3dDevice->SetRenderState(D3DRS_ALPHABLENDENABLE, false); g_pd3dDevice->SetRenderState(D3DRS_SCISSORTESTENABLE, false); D3DCOLOR clear_col_dx = D3DCOLOR_RGBA((int)(clear_color.x*255.0f), (int)(clear_color.y*255.0f), (int)(clear_color.z*255.0f), (int)(clear_color.w*255.0f)); g_pd3dDevice->Clear(0, NULL, D3DCLEAR_TARGET | D3DCLEAR_ZBUFFER, clear_col_dx, 1.0f, 0); if (g_pd3dDevice->BeginScene() >= 0) { ImGui::Render(); ImGui_ImplDX9_RenderDrawData(ImGui::GetDrawData()); g_pd3dDevice->EndScene(); } // Update and Render additional Platform Windows if (io.ConfigFlags & ImGuiConfigFlags_ViewportsEnable) { ImGui::UpdatePlatformWindows(); ImGui::RenderPlatformWindowsDefault(); } HRESULT result = g_pd3dDevice->Present(NULL, NULL, NULL, NULL); // Handle loss of D3D9 device if (result == D3DERR_DEVICELOST && g_pd3dDevice->TestCooperativeLevel() == D3DERR_DEVICENOTRESET) ResetDevice(); } ImGui_ImplDX9_Shutdown(); ImGui_ImplWin32_Shutdown(); ImGui::DestroyContext(); CleanupDeviceD3D(); ::DestroyWindow(hwnd); ::UnregisterClass(wc.lpszClassName, wc.hInstance); return 0; } // Helper functions bool CreateDeviceD3D(HWND hWnd) { if ((g_pD3D = Direct3DCreate9(D3D_SDK_VERSION)) == NULL) return false; // Create the D3DDevice ZeroMemory(&g_d3dpp, sizeof(g_d3dpp)); g_d3dpp.Windowed = TRUE; g_d3dpp.SwapEffect = D3DSWAPEFFECT_DISCARD; g_d3dpp.BackBufferFormat = D3DFMT_UNKNOWN; g_d3dpp.EnableAutoDepthStencil = TRUE; g_d3dpp.AutoDepthStencilFormat = D3DFMT_D16; g_d3dpp.PresentationInterval = D3DPRESENT_INTERVAL_ONE; // Present with vsync //g_d3dpp.PresentationInterval = D3DPRESENT_INTERVAL_IMMEDIATE; // Present without vsync, maximum unthrottled framerate if (g_pD3D->CreateDevice(D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL, hWnd, D3DCREATE_HARDWARE_VERTEXPROCESSING, &g_d3dpp, &g_pd3dDevice) < 0) return false; return true; } void CleanupDeviceD3D() { if (g_pd3dDevice) { g_pd3dDevice->Release(); g_pd3dDevice = NULL; } if (g_pD3D) { g_pD3D->Release(); g_pD3D = NULL; } } void ResetDevice() { ImGui_ImplDX9_InvalidateDeviceObjects(); HRESULT hr = g_pd3dDevice->Reset(&g_d3dpp); if (hr == D3DERR_INVALIDCALL) IM_ASSERT(0); ImGui_ImplDX9_CreateDeviceObjects(); } #ifndef WM_DPICHANGED #define WM_DPICHANGED 0x02E0 // From Windows SDK 8.1+ headers #endif // Win32 message handler extern LRESULT ImGui_ImplWin32_WndProcHandler(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam); LRESULT WINAPI WndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam) { if (ImGui_ImplWin32_WndProcHandler(hWnd, msg, wParam, lParam)) return true; switch (msg) { case WM_SIZE: if (g_pd3dDevice != NULL && wParam != SIZE_MINIMIZED) { g_d3dpp.BackBufferWidth = LOWORD(lParam); g_d3dpp.BackBufferHeight = HIWORD(lParam); ResetDevice(); } return 0; case WM_SYSCOMMAND: if ((wParam & 0xfff0) == SC_KEYMENU) // Disable ALT application menu return 0; break; 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, NULL, suggested_rect->left, suggested_rect->top, suggested_rect->right - suggested_rect->left, suggested_rect->bottom - suggested_rect->top, SWP_NOZORDER | SWP_NOACTIVATE); } break; } return ::DefWindowProc(hWnd, msg, wParam, lParam); }