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Add a function to retrieve better display name.

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Requires Win7. Shameless modification of SDL2 version.
This commit is contained in:
Scr3amer 2023-03-30 00:27:44 -04:00 committed by GitHub
parent d39db8978a
commit 08db50b6bb
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1 changed files with 87 additions and 0 deletions
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87
src/win32_monitor.c
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@ -37,6 +37,83 @@
#include <wchar.h>
// If the returned pointer is valid (not NULL) the caller of this function is in charge of freeing the memory when he is done.
static char * tryGetMoreAccurateDisplayName(const WCHAR *deviceName)
{
DISPLAYCONFIG_PATH_INFO *paths = NULL;
DISPLAYCONFIG_MODE_INFO *modes = NULL;
char *retval = NULL;
UINT32 pathCount = 0;
UINT32 modeCount = 0;
UINT32 i;
LONG rc;
do {
rc = GetDisplayConfigBufferSizes(QDC_ONLY_ACTIVE_PATHS, &pathCount, &modeCount);
if (rc != ERROR_SUCCESS) {
goto WHEN_FAILURE;
}
free(paths);
free(modes);
paths = (DISPLAYCONFIG_PATH_INFO *) malloc(sizeof (DISPLAYCONFIG_PATH_INFO) * pathCount);
modes = (DISPLAYCONFIG_MODE_INFO *) malloc(sizeof (DISPLAYCONFIG_MODE_INFO) * modeCount);
if ((paths == NULL) || (modes == NULL)) {
goto WHEN_FAILURE;
}
rc = QueryDisplayConfig(QDC_ONLY_ACTIVE_PATHS, &pathCount, paths, &modeCount, modes, 0);
} while (rc == ERROR_INSUFFICIENT_BUFFER);
if (rc == ERROR_SUCCESS) {
for (i = 0; i < pathCount; i++) {
DISPLAYCONFIG_SOURCE_DEVICE_NAME sourceName;
DISPLAYCONFIG_TARGET_DEVICE_NAME targetName;
ZeroMemory(&sourceName, sizeof(sourceName));
sourceName.header.adapterId = paths[i].targetInfo.adapterId;
sourceName.header.type = DISPLAYCONFIG_DEVICE_INFO_GET_SOURCE_NAME;
sourceName.header.size = sizeof (sourceName);
sourceName.header.id = paths[i].sourceInfo.id;
rc = DisplayConfigGetDeviceInfo(&sourceName.header);
if (rc != ERROR_SUCCESS) {
break;
} else if (wcscmp(deviceName, sourceName.viewGdiDeviceName) != 0) {
continue;
}
ZeroMemory(&targetName, sizeof(targetName));
targetName.header.adapterId = paths[i].targetInfo.adapterId;
targetName.header.id = paths[i].targetInfo.id;
targetName.header.type = DISPLAYCONFIG_DEVICE_INFO_GET_TARGET_NAME;
targetName.header.size = sizeof (targetName);
rc = DisplayConfigGetDeviceInfo(&targetName.header);
if (rc == ERROR_SUCCESS) {
retval = _glfwCreateUTF8FromWideStringWin32(targetName.monitorFriendlyDeviceName);
/* if we got an empty string, treat it as failure so we'll fallback
to getting the generic name. */
if (retval && (*retval == '\0')) {
free(retval);
retval = NULL;
}
}
break;
}
}
free(paths);
free(modes);
return retval;
WHEN_FAILURE:
free(retval);
free(paths);
free(modes);
return NULL;
}
// Callback for EnumDisplayMonitors in createMonitor
//
static BOOL CALLBACK monitorCallback(HMONITOR handle,
@ -52,12 +129,22 @@ static BOOL CALLBACK monitorCallback(HMONITOR handle,
{
_GLFWmonitor* monitor = (_GLFWmonitor*) data;
if (wcscmp(mi.szDevice, monitor->win32.adapterName) == 0)
{
monitor->win32.handle = handle;
char *possibleBetterDisplayName = tryGetMoreAccurateDisplayName(mi.szDevice);
if(possibleBetterDisplayName != NULL)
{
strncpy(monitor->name, possibleBetterDisplayName, sizeof(monitor->name) - 1);
free(possibleBetterDisplayName);
possibleBetterDisplayName = NULL;
}
}
}
return TRUE;
}
// Create monitor from an adapter and (optionally) a display
//
static _GLFWmonitor* createMonitor(DISPLAY_DEVICEW* adapter,