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authorJon TURNEY <jon.turney@dronecode.org.uk>2010-03-23 04:45:37 -0500
committerYaakov Selkowitz <yselkowitz@users.sourceforge.net>2010-04-01 01:12:38 -0500
commit92e64a5800fa09e83e38530e2668a593b81163fc (patch)
treeafc25b7eda95545596ddf44e103ce90a2d20d31b
parent4f5bdc45ce67c516ef8cbee99c282548d5a324a9 (diff)
Cygwin/X: Make default DPI match native DPI
Make the default DPI match the current Windows DPI setting. If that setting can't be retrieved, change the fallback DPI value from 75 dpi to 96 dpi. Mark the application as dpiAware in the manifest, which prevents dpi virtualization for high (>96) dpi values on Vista and later. Signed-off-by: Jon TURNEY <jon.turney@dronecode.org.uk> Signed-off-by: Yaakov Selkowitz <yselkowitz@users.sourceforge.net>
-rwxr-xr-xhw/xwin/XWin.exe.manifest5
-rw-r--r--hw/xwin/win.h2
-rwxr-xr-xhw/xwin/winprocarg.c23
3 files changed, 25 insertions, 5 deletions
diff --git a/hw/xwin/XWin.exe.manifest b/hw/xwin/XWin.exe.manifest
index 221150d52..a0d4d7dae 100755
--- a/hw/xwin/XWin.exe.manifest
+++ b/hw/xwin/XWin.exe.manifest
@@ -13,4 +13,9 @@
/>
</dependentAssembly>
</dependency>
+ <asmv3:application xmlns:asmv3="urn:schemas-microsoft-com:asm.v3">
+ <asmv3:windowsSettings xmlns="http://schemas.microsoft.com/SMI/2005/WindowsSettings">
+ <dpiAware>true</dpiAware>
+ </asmv3:windowsSettings>
+ </asmv3:application>
</assembly>
diff --git a/hw/xwin/win.h b/hw/xwin/win.h
index db0190770..0069c85dd 100644
--- a/hw/xwin/win.h
+++ b/hw/xwin/win.h
@@ -64,7 +64,7 @@
#define WIN_DEFAULT_BLACKPIXEL 0
#define WIN_DEFAULT_LINEBIAS 0
#define WIN_DEFAULT_E3B_TIME 50 /* milliseconds */
-#define WIN_DEFAULT_DPI 75
+#define WIN_DEFAULT_DPI 96
#define WIN_DEFAULT_REFRESH 0
#define WIN_DEFAULT_WIN_KILL TRUE
#define WIN_DEFAULT_UNIX_KILL FALSE
diff --git a/hw/xwin/winprocarg.c b/hw/xwin/winprocarg.c
index 66da76f6c..950e6b81e 100755
--- a/hw/xwin/winprocarg.c
+++ b/hw/xwin/winprocarg.c
@@ -157,12 +157,27 @@ winInitializeDefaultScreens (void)
dwWidth = GetSystemMetrics (SM_CXSCREEN);
dwHeight = GetSystemMetrics (SM_CYSCREEN);
- winErrorFVerb (2, "winInitializeDefaultScreens - w %d h %d\n",
- (int) dwWidth, (int) dwHeight);
+ winErrorFVerb(2, "winInitializeDefaultScreens - primary monitor w %d h %d\n", (int) dwWidth, (int) dwHeight);
- /* Set a default DPI, if no parameter was passed */
+ /* Set a default DPI, if no '-dpi' option was used */
if (monitorResolution == 0)
- monitorResolution = WIN_DEFAULT_DPI;
+ {
+ HDC hdc = GetDC(NULL);
+ if (hdc)
+ {
+ int dpiX = GetDeviceCaps(hdc, LOGPIXELSX);
+ int dpiY = GetDeviceCaps(hdc, LOGPIXELSY);
+
+ winErrorFVerb(2, "winInitializeDefaultScreens - native DPI x %d y %d\n", dpiX, dpiY);
+ monitorResolution = dpiY;
+ ReleaseDC(NULL, hdc);
+ }
+ else
+ {
+ winErrorFVerb(1, "winInitializeDefaultScreens - Failed to retrieve native DPI, falling back to default of %d DPI\n", WIN_DEFAULT_DPI);
+ monitorResolution = WIN_DEFAULT_DPI;
+ }
+ }
for (i = 0; i < MAXSCREENS; ++i)
{