python-pillow/Pillow
1
1
Fork 0
mirror of https://github.com/python-pillow/Pillow.git synced 2025-01-28 02:04:36 +03:00
Code Issues Packages Projects Releases Wiki Activity

override Win10 dpi scaling in screengrab

Browse Source 
(cherry picked from commit 45ead62d6431c8339613e8ced85b705c80a7fdc9)
This commit is contained in:
nulano 2019-07-25 21:34:58 +02:00 committed by Andrew Murray
parent 6de118abd3
commit cacbdc680c
1 changed files with 21 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

21
src/display.c
View File

@ -319,6 +319,8 @@ PyImaging_DisplayModeWin32(PyObject* self, PyObject* args)
/* -------------------------------------------------------------------- */ /* -------------------------------------------------------------------- */
/* Windows screen grabber */ /* Windows screen grabber */
typedef HANDLE(__stdcall* Func_SetThreadDpiAwarenessContext)(HANDLE);
PyObject* PyObject*
PyImaging_GrabScreenWin32(PyObject* self, PyObject* args) PyImaging_GrabScreenWin32(PyObject* self, PyObject* args)
{ {
@ -329,6 +331,9 @@ PyImaging_GrabScreenWin32(PyObject* self, PyObject* args)
HDC screen, screen_copy; HDC screen, screen_copy;
DWORD rop; DWORD rop;
PyObject* buffer; PyObject* buffer;
HANDLE dpiAwareness;
HMODULE user32 = LoadLibraryA("User32.dll");
Func_SetThreadDpiAwarenessContext SetThreadDpiAwarenessContext_function;
if (!PyArg_ParseTuple(args, "|i", &includeLayeredWindows)) if (!PyArg_ParseTuple(args, "|i", &includeLayeredWindows))
return NULL; return NULL;
@ -339,9 +344,25 @@ PyImaging_GrabScreenWin32(PyObject* self, PyObject* args)
screen = CreateDC("DISPLAY", NULL, NULL, NULL); screen = CreateDC("DISPLAY", NULL, NULL, NULL);
screen_copy = CreateCompatibleDC(screen); screen_copy = CreateCompatibleDC(screen);
// added in Windows 10 (1607)
// loaded dynamically to avoid link errors
SetThreadDpiAwarenessContext_function =
(Func_SetThreadDpiAwarenessContext)
GetProcAddress(user32, "SetThreadDpiAwarenessContext");
if (SetThreadDpiAwarenessContext_function != NULL) {
// DPI_AWARENESS_CONTEXT_PER_MONITOR_AWARE = ((DPI_CONTEXT_HANDLE)-3)
dpiAwareness = SetThreadDpiAwarenessContext_function((HANDLE) -3);
}
width = GetDeviceCaps(screen, HORZRES); width = GetDeviceCaps(screen, HORZRES);
height = GetDeviceCaps(screen, VERTRES); height = GetDeviceCaps(screen, VERTRES);
if (SetThreadDpiAwarenessContext_function != NULL) {
dpiAwareness = SetThreadDpiAwarenessContext_function(dpiAwareness);
}
FreeLibrary(user32);
bitmap = CreateCompatibleBitmap(screen, width, height); bitmap = CreateCompatibleBitmap(screen, width, height);
if (!bitmap) if (!bitmap)
goto error; goto error;