GetDpiForWindow function (winuser.h)
Returns the dots per inch (dpi) value for the specified window.
Syntax
UINT GetDpiForWindow(
[in] HWND hwnd
);
Parameters
[in] hwnd
The window that you want to get information about.
Return value
The DPI for the window, which depends on the DPI_AWARENESS of the window. See the Remarks section for more information. An invalid hwnd value will result in a return value of 0.
Remarks
The following table indicates the return value of GetDpiForWindow based on the DPI_AWARENESS of the provided hwnd.
| DPI_AWARENESS | Return value |
|---|---|
| DPI_AWARENESS_UNAWARE | The base value of DPI is which is set to 96 (defined as `USER_DEFAULT_SCREEN_DPI`) |
| DPI_AWARENESS_SYSTEM_AWARE | The system DPI. |
| DPI_AWARENESS_PER_MONITOR_AWARE | The DPI of the monitor where the window is located. |
Examples
See Create a simple Direct2D application.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows 10, version 1607 [desktop apps only] |
| Minimum supported server | Windows Server 2016 [desktop apps only] |
| Target Platform | Windows |
| Header | winuser.h (include Windows.h) |
| Library | User32.lib |
| DLL | User32.dll |