windows-terminal/scratch/ScratchIslandApp/WindowExe/icon.cpp

50 lines
1.6 KiB
C++

// Copyright (c) Microsoft Corporation.
// Licensed under the MIT license.
#include "pch.h"
#include "resource.h"
static int _GetActiveAppIconResource()
{
auto iconResource{ IDI_APPICON };
HIGHCONTRASTW hcInfo{};
hcInfo.cbSize = sizeof(hcInfo);
if (SystemParametersInfoW(SPI_GETHIGHCONTRAST, sizeof(hcInfo), &hcInfo, 0))
{
if (WI_IsFlagSet(hcInfo.dwFlags, HCF_HIGHCONTRASTON))
{
iconResource = IDI_APPICON_HC_BLACK;
if (0x00FFFFFF == GetSysColor(COLOR_WINDOW)) // white window color == white high contrast
{
iconResource = IDI_APPICON_HC_WHITE;
}
}
}
return iconResource;
}
void UpdateWindowIconForActiveMetrics(HWND window)
{
auto iconResource{ MAKEINTRESOURCEW(_GetActiveAppIconResource()) };
// These handles are loaded with LR_SHARED, so they are safe to "leak".
HANDLE smallIcon{ LoadImageW(wil::GetModuleInstanceHandle(), iconResource, IMAGE_ICON, GetSystemMetrics(SM_CXSMICON), GetSystemMetrics(SM_CYSMICON), LR_SHARED) };
LOG_LAST_ERROR_IF_NULL(smallIcon);
HANDLE largeIcon{ LoadImageW(wil::GetModuleInstanceHandle(), iconResource, IMAGE_ICON, GetSystemMetrics(SM_CXICON), GetSystemMetrics(SM_CYICON), LR_SHARED) };
LOG_LAST_ERROR_IF_NULL(largeIcon);
if (smallIcon)
{
SendMessageW(window, WM_SETICON, ICON_SMALL, reinterpret_cast<LPARAM>(smallIcon));
}
if (largeIcon)
{
SendMessageW(window, WM_SETICON, ICON_BIG, reinterpret_cast<LPARAM>(largeIcon));
}
}