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add C module to get the Windows display information

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This commit is contained in:
Josh Holtrop 2013-11-24 20:34:36 -05:00
parent 15d9612d7e
commit 5575022ffc
2 changed files with 54 additions and 2 deletions
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5
Rakefile.rb
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@ -26,7 +26,7 @@ task :default do
"modules/gl3n/gl3n",
"modules/glamour/glamour",
].each do |dir|
sources += Dir["#{dir}/**/*.d"]
sources += Dir["#{dir}/**/*.{d,c}"]
end
sources << "build/obj2d/logoobj.d"
env["D_IMPORT_PATH"] += [
@ -38,8 +38,9 @@ task :default do
"modules/glamour",
"build/obj2d",
]
env["CFLAGS"] += ["-Wall", "-std=gnu99"]
env["DFLAGS"] += ["-fversion=Derelict3", "-fversion=gl3n", "-fversion=SDLImage"]
env["LDFLAGS"] += ["-static-libgcc"]
env["LDFLAGS"] += ["-static-libgcc", "-mwindows"]
env.build_root = "build"
env.Obj2D("build/obj2d/logoobj.d", "model/gentex-logo.obj")
env.Program("gss", sources)

51
src/displayinfo.c Normal file
View File

@ -0,0 +1,51 @@
/*
* Author: Josh Holtrop
* This Windows-specific module will get the screen size
* and return the number of monitors present.
*/
#include <stdio.h>
#include <stdint.h>
#include <string.h>
#include <windows.h>
void GetDisplaySize(int * width, int * height, int * num_monitors)
{
int w = 0;
int h = 0;
int n = 0;
/* loop through the display devices to get their dimensions */
for (int i = 0; i < 10; i++)
{
DISPLAY_DEVICE dev;
dev.cb = sizeof(DISPLAY_DEVICE);
if (!EnumDisplayDevices(NULL, i, &dev, 0))
break;
/* we only want real display devices to matter */
if ((strcmp(dev.DeviceID, "") != 0) && (dev.StateFlags & DISPLAY_DEVICE_ATTACHED_TO_DESKTOP))
{
HDC hdc = CreateDC(TEXT("DISPLAY"), dev.DeviceString, NULL, NULL);
if (hdc != NULL)
{
n++;
w += GetDeviceCaps(hdc, HORZRES);
int thisHeight = GetDeviceCaps(hdc, VERTRES);
/* assume monitors are all horizontally aligned */
if (thisHeight > h)
h = thisHeight;
}
}
}
/* only update width and height if we have valid data */
if (w != 0 && h != 0)
{
if (width != NULL)
*width = w;
if (height != NULL)
*height = h;
if (num_monitors != NULL)
*num_monitors = n;
}
}