How to get colors of default app mode "Dark" in my Win32 App

Question

   There is "choose your default app mode" in Win10 setting with two options, "Light" and "Dark". I know an UWP app automatically respond to the setting and change its appearance automatically. Now the Win32 common file open dialog in a simple MFC app also respond to this setting and change its appearance automatically. I can respond to this setting change by respond to WM_SETTINGCHANGE, but how can I get the colors of this "Dark" mode in a Win32 app or a MFC app. I tried to use theme API as following, but it always return the color of "Current Theme" but not the "default app mode".

 HTHEME hTheme = OpenThemeData (NULL, L"CompositedWindow::Window");
 if (hTheme)
     {
     COLORREF btnFaceColor = GetThemeSysColor (hTheme, TMT_BTNFACE);
     }

  BTW, I'm not talking about high contrast Theme, but "choose your default app mode" setting. I suppose they are different settings which are set separately.

  I guess if I can get correct HTHEME of it, then I can get all colors in it. but how?

 

Answer 1

With  Immersive color APIs like GetImmersiveColorFromColorSetEx

Answer 2

thanks. is it a window SDK API?  which header file is it in? and which lib I should link to.

Answer 3

I found it in uxtheme.dll, it's an exported interface, but not included in uxtheme.h.   I should use GetProcAddress to get it. 

thanks anyway.

Answer 4

A test enumerating Immersive colors in a ListView (Windows 10) =>

(re-initialized on WM_SETTINGCHANGE)

#include <windows.h>
#include <tchar.h>

#include <commctrl.h>
#pragma comment (lib, "comctl32")

#pragma comment(linker,"\"/manifestdependency:type='win32' \
name='Microsoft.Windows.Common-Controls' version='6.0.0.0' \
processorArchitecture='*' publicKeyToken='6595b64144ccf1df' language='*'\"")

HINSTANCE hInst;
LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);
int nWidth = 600, nHeight = 400;
#define IDC_LISTVIEW 10
DWORD nTicksOld = 0;

void FillListView(HWND hWndLV);

typedef int (WINAPI *PGetImmersiveColorSetCount)();
typedef DWORD(WINAPI *PGetImmersiveColorFromColorSetEx)(UINT dwImmersiveColorSet, UINT dwImmersiveColorType, bool bIgnoreHighContrast, UINT dwHighContrastCacheMode);
typedef WCHAR **(WINAPI *PGetImmersiveColorNamedTypeByIndex)(UINT dwImmersiveColorType);
typedef int (WINAPI *PGetImmersiveColorTypeFromName)(const WCHAR *name);
typedef int (WINAPI *PGetImmersiveUserColorSetPreference)(bool bForceCheckRegistry, bool bSkipCheckOnFail);

PGetImmersiveColorSetCount pGetImmersiveColorSetCount = NULL;
PGetImmersiveColorFromColorSetEx pGetImmersiveColorFromColorSetEx = NULL;
PGetImmersiveColorNamedTypeByIndex pGetImmersiveColorNamedTypeByIndex = NULL;
PGetImmersiveColorTypeFromName pGetImmersiveColorTypeFromName = NULL;
PGetImmersiveUserColorSetPreference pGetImmersiveUserColorSetPreference = NULL;

int APIENTRY wWinMain(_In_ HINSTANCE hInstance, _In_opt_ HINSTANCE hPrevInstance, _In_ LPWSTR lpCmdLine, _In_ int nCmdShow)
{

	HMODULE hUxTheme = LoadLibrary(TEXT("uxtheme.dll"));
	pGetImmersiveColorSetCount = (PGetImmersiveColorSetCount)GetProcAddress(hUxTheme, MAKEINTRESOURCEA(94));
	pGetImmersiveColorFromColorSetEx = (PGetImmersiveColorFromColorSetEx)GetProcAddress(hUxTheme, MAKEINTRESOURCEA(95));
	pGetImmersiveColorNamedTypeByIndex = (PGetImmersiveColorNamedTypeByIndex)GetProcAddress(hUxTheme, MAKEINTRESOURCEA(100));
	pGetImmersiveColorTypeFromName = (PGetImmersiveColorTypeFromName)GetProcAddress(hUxTheme, MAKEINTRESOURCEA(96));
	pGetImmersiveUserColorSetPreference = (PGetImmersiveUserColorSetPreference)GetProcAddress(hUxTheme, MAKEINTRESOURCEA(98));
	if (!pGetImmersiveColorSetCount || !pGetImmersiveColorFromColorSetEx || !pGetImmersiveColorNamedTypeByIndex || !pGetImmersiveColorTypeFromName || !pGetImmersiveUserColorSetPreference)
		return MessageBox(NULL, TEXT("Cannot load Immersive colors APIs !"), TEXT("Error"), MB_ICONERROR | MB_OK);

	hInst = hInstance;
	WNDCLASSEX wcex =
	{
		sizeof(WNDCLASSEX), CS_HREDRAW | CS_VREDRAW, WndProc, 0, 0, hInst, LoadIcon(NULL, IDI_APPLICATION),
		LoadCursor(NULL, IDC_ARROW), (HBRUSH)(COLOR_WINDOW + 1), NULL, TEXT("WindowClass"), NULL,
	};
	if (!RegisterClassEx(&wcex))
		return MessageBox(NULL, TEXT("Cannot register class !"), TEXT("Error"), MB_ICONERROR | MB_OK);
	int nX = (GetSystemMetrics(SM_CXSCREEN) - nWidth) / 2, nY = (GetSystemMetrics(SM_CYSCREEN) - nHeight) / 2;
	HWND hWnd = CreateWindowEx(0, wcex.lpszClassName, TEXT("Test Immersive colors"), WS_OVERLAPPEDWINDOW, nX, nY, nWidth, nHeight, NULL, NULL, hInst, NULL);
	if (!hWnd)
		return MessageBox(NULL, TEXT("Cannot create window !"), TEXT("Error"), MB_ICONERROR | MB_OK);
	ShowWindow(hWnd, SW_SHOWNORMAL);
	UpdateWindow(hWnd);
	MSG msg;
	while (GetMessage(&msg, NULL, 0, 0))
	{
		TranslateMessage(&msg);
		DispatchMessage(&msg);
	}
	return (int)msg.wParam;
}

LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
	static HWND hWndButton = NULL;
	static HWND hWndLV = NULL;
	int wmId, wmEvent;
	switch (message)
	{
	case WM_CREATE:
	{
		hWndLV = CreateWindowEx(0, WC_LISTVIEW, TEXT(""), WS_VISIBLE | WS_CHILD | WS_BORDER | LVS_REPORT | LVS_SINGLESEL, 10, 10, nWidth - 35, nHeight - 60, hWnd, (HMENU)IDC_LISTVIEW, hInst, NULL);

		DWORD dwExStyle = ListView_GetExtendedListViewStyle(hWndLV);
		dwExStyle |= LVS_EX_FULLROWSELECT | LVS_EX_INFOTIP | LVS_EX_LABELTIP | LVS_EX_DOUBLEBUFFER;
		ListView_SetExtendedListViewStyle(hWndLV, dwExStyle);

		LVCOLUMN lvCol;
		TCHAR wszBuf[32];
		wsprintf(wszBuf, TEXT("Color"));
		ZeroMemory(&lvCol, sizeof(lvCol));
		lvCol.mask = LVCF_TEXT | LVCF_FMT | LVCF_WIDTH;
		lvCol.fmt = LVCFMT_LEFT;
		lvCol.cx = 440;
		lvCol.pszText = wszBuf;
		ListView_InsertColumn(hWndLV, 0, &lvCol);
		wsprintf(wszBuf, TEXT("ARGB"));
		lvCol.pszText = wszBuf;
		lvCol.cx = 100;
		ListView_InsertColumn(hWndLV, 1, &lvCol);
		FillListView(hWndLV);		
		return 0;
	}
	break;
	case WM_NOTIFY:
	{
		LPNMHDR pnmhdr = (LPNMHDR)lParam;
		LPNMLISTVIEW pnmListView = (LPNMLISTVIEW)lParam;
		switch (pnmhdr->code)
		{
		case NM_CUSTOMDRAW:
		{
			NMLVCUSTOMDRAW* pnmlv = (NMLVCUSTOMDRAW*)pnmhdr;
			int nItem = pnmlv->nmcd.dwItemSpec;
			int nSubItem = pnmlv->iSubItem;
			BOOL bHighlighted = 0;

			if (pnmlv->nmcd.dwDrawStage == CDDS_PREPAINT)
			{
				return CDRF_NOTIFYITEMDRAW;
			}
			else if (pnmlv->nmcd.dwDrawStage == CDDS_ITEMPREPAINT)
			{
				bHighlighted = (pnmlv->nmcd.uItemState & (CDIS_SELECTED | CDIS_FOCUS));
				if (bHighlighted)
				{
					pnmlv->clrText = RGB(255, 255, 0);
					pnmlv->clrTextBk = RGB(255, 0, 0);
					ListView_SetItemState(pnmhdr->hwndFrom, nItem, 0, LVIS_SELECTED);
				}
				else
				{
					WCHAR wsText[255] = L"";
					ListView_GetItemText(pnmhdr->hwndFrom, nItem, 1, wsText, ARRAYSIZE(wsText));
					DWORD nColor = _wtof(wsText);
					COLORREF color = RGB(0xFF & nColor, (0xFF00 & nColor) >> 8, (0xFF0000 & nColor) >> 16);
					pnmlv->clrTextBk = color;
					if (color == 0)
						pnmlv->clrText = RGB(255, 255, 255);
				}			
				return CDRF_DODEFAULT | CDRF_NOTIFYPOSTPAINT;
			}			
			else if (pnmlv->nmcd.dwDrawStage == CDDS_ITEMPOSTPAINT)
			{
						
			}
		}
		break;
		}
	}
	break;
	case WM_SIZE:
	{
		MoveWindow(hWndLV, 0, 0, LOWORD(lParam), HIWORD(lParam), TRUE);
		return 0;
	}
	break;
	case WM_SETTINGCHANGE:
	{
		WCHAR* plParam = (LPWSTR)lParam;
		if (plParam)
		{
			if (lstrcmp(plParam, TEXT("ImmersiveColorSet")) == 0)
			{
				DWORD nTicks = GetTickCount();
				if (nTicks - nTicksOld > 5000 || nTicksOld == 0)
				{
					Beep(6000, 50);
					ListView_DeleteAllItems(hWndLV);
					FillListView(hWndLV);
				}
				nTicksOld = nTicks;				
			}			
		}
		return 0;
	}
	break;	
	case WM_DESTROY:
	{
		PostQuitMessage(0);
		return 0;
	}
	break;
	default:
		return DefWindowProc(hWnd, message, wParam, lParam);
	}
	return 0;
}

void FillListView(HWND hWndLV)
{
	TCHAR wsName[255] = TEXT("");
	TCHAR wsNameImmersive[300] = TEXT("");
	TCHAR wszBuf[32];

	if (pGetImmersiveColorSetCount && pGetImmersiveColorFromColorSetEx && pGetImmersiveColorNamedTypeByIndex && pGetImmersiveColorTypeFromName)
	{
		int nItem = 0;
		for (int i = 0; i <= 1250; i++)
		{
			WCHAR** pName = pGetImmersiveColorNamedTypeByIndex(i);
			if (pName)
			{
				lstrcpy(wsName, *pName);

				LVITEM lvItem = { 0 };
				lvItem.mask = LVIF_TEXT;
				lvItem.cchTextMax = 256;
				lvItem.iItem = i;
				lvItem.pszText = wsName;
				ListView_InsertItem(hWndLV, &lvItem);

				lstrcpy(wsNameImmersive, TEXT("Immersive"));
				lstrcat(wsNameImmersive, wsName);
				DWORD rgba = pGetImmersiveColorFromColorSetEx(pGetImmersiveUserColorSetPreference(false, false), pGetImmersiveColorTypeFromName(wsNameImmersive), false, 0);
				lvItem.iSubItem = 1;
				wsprintf(wszBuf, TEXT("%lu"), rgba);
				lvItem.pszText = wszBuf;
				ListView_SetItem(hWndLV, &lvItem);
			}
		}
	}
}

Answer 5

it really help. thanks a lot