I'm trying to set an emblem using gio
#include <gtk/gtk.h>
#include <gdk/gdk.h>
#include <glib.h>
#include <gio/gio.h>
#include <stdio.h>
int main (int argc, char *argv[])
{
GFile *gfile = NULL;
g_type_init();
gfile = g_file_new_for_path("./foo.txt");
if (g_file_set_attribute_string(gfile,
"metadata::emblems",
"favorite",
G_FILE_QUERY_INFO_NONE,
NULL, NULL) == TRUE) {
puts("Success");
} else {
puts("Fail");
}
return 0;
}
if the file exists, the function returns TRUE, which, according the docs means the metadata was set, but Nautilus (GNOME) doesn't display the favorite emblem. There are not many example on the net, so I'm kind of stuck.
It looks like metadata::emblems needs an array of strings even if you are only setting one value.
This seems to work:
char *value[] = {"favorite", '\0'};
[...]
g_file_set_attribute(file, "metadata::emblems",
G_FILE_ATTRIBUTE_TYPE_STRINGV,
&value[0],
G_FILE_QUERY_INFO_NONE,
NULL, NULL);
If you want Nautilus to show an emblem, you need to actually provide an extension to Nautilus to do so. Your extension should use the nautilus-info-provider interface, and in the nautilus_info_provider_update_file_info()
function you can call the nautilus_file_info_add_emblem() function to add an emblem.
Related
I have seen how to configure xrm resource names via XrmOptionDescRec struct array. An example of this can be found in this question.
I am wondering if I can also pass non-X11 related arguments via this way.
In particular, if I want to pass the name of a named pipe to the application so the X11 application opens that particular named pipe,
would it be using XrmOptionDescRec struct array an option?
Can I set up and retrieve arbitrary resource names?
If so, how do I retrieve the argument value?
#include <stdlib.h>
#include <stdio.h>
#include <Xm/Xm.h>
#include <Xm/PushB.h>
static XrmOptionDescRec options[] = {
{ "-namedpipe", "namedpipe", XrmoptionSepArg, NULL },
};
int main(int argc, char *argv[]) {
Widget toplevel; /* Top Level Button */
XtAppContext app; /* Application Context */
char *window_title = NULL; /* Top Level Window Title */
/* INITIALIZE TOP LEVEL WINDOW */
XtSetLanguageProc(NULL, NULL, NULL);
toplevel = XtVaOpenApplication( &app, argv[0], options, XtNumber(options), &argc, argv, NULL, sessionShellWidgetClass, NULL);
/* HOW WOULD I GET HERE named_pipe ASSIGNED ????? */
char named_pipe[256];
...
/* REALIZE TOPLEVEL WINDOW AND LAUNCH APPLICATION LOOP */
XtRealizeWidget(toplevel);
XtAppMainLoop(app);
return 0;
}
Just for anyone interested. In Xt/Motif applications this seems to be the way to handle application command line parameters as resources (they have the advantage of being handled smoothly by the Xt wrappers around Xlib resource manager functions). So basically you will be able to define the argument in user, application and system-wide resource files, and also via command line.
#define XtNnamedPipe "namedPipe"
#define XtCNamedPipe "NamedPipe"
typedef struct {
String named_pipe;
} AppData;
AppData app_data;
static XtResource resources[] = {
{
XtNnamedPipe,
XtCNamedPipe,
XtRString,
sizeof(String),
XtOffsetOf(AppData, named_pipe),
XtRString,
NULL
},
};
static XrmOptionDescRec options[] = {
{"-namedpipe", "namedPipe", XrmoptionSepArg, "/tmp/namedpipe0"},
};
...
int main(int argc, char *argv[]) {
...
toplevel = XtVaOpenApplication(
&app, argv[0], options, XtNumber(options), &argc, argv, NULL, sessionShellWidgetClass,
XmNwidth, 400, XmNheight, 300, NULL
);
...
/* GET APPLICATION RESOURCES */
XtGetApplicationResources(
toplevel,
&app_data,
resources,
XtNumber(resources),
NULL,
0);
printf("DEBUG: %s\n", app_data.named_pipe);
...
}
I want to write a program to create a shortcut for a specific file by using win32 API in c. my IDE is visual studio 2010.
I found this page but its sample just not compile and return many errors.
I also find this code but this always create a link with Target: "D:\Desktop\㩣睜湩潤獷湜瑯灥摡攮數" and I don't know why.
can someone tell me why the sample code of Microsoft is not working or the second one return something in Chinese shape language and also with wrong and constant location for any argument?
This is my code for MSDN sample:
#include "stdafx.h"
#include "windows.h"
#include "winnls.h"
#include "shobjidl.h"
#include "objbase.h"
#include "objidl.h"
#include "shlguid.h"
void _tmain(int argc, TCHAR *argv[])
{
CreateLink(argv[1],__argv[2],argv[3]);
}
HRESULT CreateLink(LPCWSTR lpszPathObj, LPCSTR lpszPathLink, LPCWSTR lpszDesc)
{
HRESULT hres;
IShellLink* psl;
// Get a pointer to the IShellLink interface. It is assumed that CoInitialize
// has already been called.
hres = CoCreateInstance(CLSID_ShellLink, NULL, CLSCTX_INPROC_SERVER, IID_IShellLink, (LPVOID*)&psl);
if (SUCCEEDED(hres))
{
IPersistFile* ppf;
// Set the path to the shortcut target and add the description.
psl->SetPath(lpszPathObj);
psl->SetDescription(lpszDesc);
// Query IShellLink for the IPersistFile interface, used for saving the
// shortcut in persistent storage.
hres = psl->QueryInterface(IID_IPersistFile, (LPVOID*)&ppf);
if (SUCCEEDED(hres))
{
WCHAR wsz[MAX_PATH];
// Ensure that the string is Unicode.
MultiByteToWideChar(CP_ACP, 0, lpszPathLink, -1, wsz, MAX_PATH);
// Add code here to check return value from MultiByteWideChar
// for success.
// Save the link by calling IPersistFile::Save.
hres = ppf->Save(wsz, TRUE);
ppf->Release();
}
psl->Release();
}
return hres;
}
and the errors are:
1 error C1083: Cannot open include file: 'stdafx.h' and
2 IntelliSense: cannot open source file "stdafx.h"
CreateLink(argv[1],__argv[2],argv[3]);
This call looks weird. You are using argv[] for two LPCWSTR (const wchar_t *) parameters, but are using __argv[] for an LPCSTR (const char *) parameter. You should change the 2nd parameter to LPCWSTR to match the other parameters, and then use argv[] instead of __argv[].
The TCHAR-based IShellLink works with LP(C)WSTR string parameters, and LP(C)TSTR is LP(C)WSTR when compiling for Unicode. Which you are obviously doing, given that you are passing TCHAR-based argv[] values to LPCWSTR parameters, which will only compile if TCHAR is wchar_t.
IPersistFile::Save() takes only a Unicode string as input, regardless of what TCHAR maps to. You are converting the char* value from __argv[] from ANSI to Unicode, so you may as well just get a Unicode string from argv[] to begin with, and omit the call to MultiByteToWideChar() altogether.
There is no good reason to mix ANSI and Unicode strings like this. This is something the MSDN example is getting wrong.
And since your function parameters are working with Unicode strings, you should use the IShellLinkW interface directly instead of the TCHAR-based IShellLink interface.
Try this:
#include "stdafx.h"
#include "windows.h"
#include "shobjidl.h"
#include "objbase.h"
#include "objidl.h"
#include "shlguid.h"
HRESULT CreateLink(LPCWSTR lpszPathObj, LPCWSTR lpszPathLink, LPCWSTR lpszDesc)
{
HRESULT hres;
IShellLinkW* psl;
// Get a pointer to the IShellLink interface. It is assumed that CoInitialize
// has already been called.
hres = CoCreateInstance(CLSID_ShellLink, NULL, CLSCTX_INPROC_SERVER, IID_IShellLinkW, (LPVOID*)&psl);
if (SUCCEEDED(hres))
{
IPersistFile* ppf;
// Set the path to the shortcut target and add the description.
psl->SetPath(lpszPathObj);
psl->SetDescription(lpszDesc);
// Query IShellLink for the IPersistFile interface, used for saving the
// shortcut in persistent storage.
hres = psl->QueryInterface(IID_IPersistFile, (LPVOID*)&ppf);
if (SUCCEEDED(hres))
{
// Save the link by calling IPersistFile::Save.
hres = ppf->Save(lpszPathLink, TRUE);
ppf->Release();
}
psl->Release();
}
return hres;
}
void _tmain(int argc, TCHAR *argv[])
{
if (argc > 3)
CreateLink(argv[1], argv[2], argv[3]);
}
Visual Studio generates stdafx.h and stdafx.cpp when you are using new project wizard. If Create empty project checkmark is marked, it will not generate them. These files are used to build a precompiled header file Projname.pch and a precompiled types file Stdafx.obj
For small projects you can eventually remove #include "stdafx.h", but it would be better to create new project with Create empty project unmarked.
I'm trying to use the GetAppliedGPOList function, but cannot find/understand what the pGuidExtension should be.
Here's the simple code so far:
#include <Windows.h>
#include <UserEnv.h>
int wmain(int argc, WCHAR *argv[])
{
//GetAppliedGPOList
DWORD flags = GPO_LIST_FLAG_MACHINE;
LPCWSTR machineName = NULL; //Local computer is used
PSID sidUser = NULL;
GUID *pGuidExtension; //What is the GUID of the extension?
PGROUP_POLICY_OBJECT *ppGPOList;
return 0;
}
Cannot run the function because I need to send that value.
Any example about the pGuidExtension value?
I did search here but found nothing about it.
Thank you.
The guids is listed at
HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\GPExtensions
For example - Group Policy Client Side Extension List. The GetAppliedGPOList is looked under
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Group Policy\History\{GuidExtension}
key
Hello.
First I'm sorry for my ita-english.
I want use gwan with aerospike but when run the servlet...problem.
I start with this example.c of aerospike. In file example.c I put gwan.h and this is the output ./gwan:
loading
hello.cs: to use .cs scripts, install C#..
hello.lua: to use .lua scripts, install Lua
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Linking example.c: undefined symbol: g_namespace
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
To run G-WAN, you must fix the error(s) or remove this Servlet.
Inside example.c:
#include "gwan.h"
#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>
#include <stdlib.h>
#include <aerospike/aerospike.h>
#include <aerospike/aerospike_key.h>
#include <aerospike/aerospike_query.h>
#include <aerospike/as_error.h>
#include <aerospike/as_key.h>
#include <aerospike/as_query.h>
#include <aerospike/as_record.h>
#include <aerospike/as_status.h>
#include <aerospike/as_val.h>
#include "example_utils.h"
const char TEST_INDEX_NAME[] = "test-bin-index";
bool query_cb(const as_val* p_val, void* udata);
void cleanup(aerospike* p_as);
bool insert_records(aerospike* p_as);
int
main(int argc, char* argv[])
{
if (! example_get_opts(argc, argv, EXAMPLE_MULTI_KEY_OPTS)) {
exit(-1);
}
aerospike as;
example_connect_to_aerospike(&as);
example_remove_test_records(&as);
example_remove_index(&as, TEST_INDEX_NAME);
if (! example_create_integer_index(&as, "test-bin", TEST_INDEX_NAME))
{
cleanup(&as);
exit(-1);
}
if (! insert_records(&as)) {
cleanup(&as);
exit(-1);
}
if (! example_read_test_records(&as)) {
cleanup(&as);
exit(-1);
}
as_error err;
as_query query;
as_query_init(&query, g_namespace, g_set);
as_query_where_inita(&query, 1);
as_query_where(&query, "test-bin", as_integer_equals(7));
LOG("executing query: where test-bin = 7");
if (aerospike_query_foreach(&as, &err, NULL, &query, query_cb, NULL)
!= AEROSPIKE_OK) {
LOG("aerospike_query_foreach() returned %d - %s", err.code,
err.message);
as_query_destroy(&query);
cleanup(&as);
exit(-1);
}
LOG("query executed");
as_query_destroy(&query);
cleanup(&as);
LOG("simple query example successfully completed");
return 0;
}
bool
query_cb(const as_val* p_val, void* udata)
{
if (! p_val) {
LOG("query callback returned null - query is complete");
return true;
}
as_record* p_rec = as_record_fromval(p_val);
if (! p_rec) {
LOG("query callback returned non-as_record object");
return true;
}
LOG("query callback returned record:");
example_dump_record(p_rec);
return true;
}
void
cleanup(aerospike* p_as)
{
example_remove_test_records(p_as);
example_remove_index(p_as, TEST_INDEX_NAME);
example_cleanup(p_as);
}
bool
insert_records(aerospike* p_as)
{
set
as_record rec;
as_record_inita(&rec, 1);
for (uint32_t i = 0; i < g_n_keys; i++) {
as_error err;
as_key key;
as_key_init_int64(&key, g_namespace, g_set, (int64_t)i);
as_record_set_int64(&rec, "test-bin", (int64_t)i);
if (aerospike_key_put(p_as, &err, NULL, &key, &rec) != AEROSPIKE_OK) {
LOG("aerospike_key_put() returned %d - %s", err.code, err.message);
return false;
}
}
LOG("insert succeeded");
return true;
}
how can connect aerospike with gwan?
Thank you
You need to #pragma link your aerospike library, and make sure all your required header files are in the right place. See G-WAN FAQ or read example code in the G-WAN tarball.
Also, in G-WAN the return code of the main function will be used as HTTP response code, so avoid return -1;.
undefined symbol: g_namespace
the error message is clear. As long as this variable is undefined your C servlet won't compile.
I don't know your library but this variable is probably defined in a library include file - or must be defined by the end user (you). Check the library documentation.
Detailed steps to run Aerospike C-client example with G-WAN,
Download and extract G-WAN server tar on your system
You can start the G-WAN server using ./gwan script present in extracted folder, e.g. ./gwan_linux64-bit/
Get Aerospike C-client from https://github.com/aerospike/aerospike-client-c, and install on your system
Copy example.c to ./gwan_linux64-bit/0.0.0.0_8080/#0.0.0.0/csp/
Make following changes to example.c,
Add following #pragma directive,
#pragma include "/home/user/aerospike-client-c/examples/utils/src/include/"
This will help search example_utils.h, which is necessary for all the example scripts in C-client.
Add following #pragma directive,
#pragma link "/home/user/aerospike-client-c/examples/utils/src/main/example_utils.c"
We shall have to link example_utils.c, as it has definitions of all util functions used in example scripts.
Make changes to the return values. Retun proper HTTP error codes.
Now, you are good to go. Run ./gwan server and access your webservice through browser, http://127.0.0.1:8080/?example.c
I have some C code trying to use libharu. Although I can use every function of this library (even UTF8) I can hardly draw images. Here is some very basic code:
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <math.h>
#include <setjmp.h>
#include "hpdf.h"
jmp_buf env;
#ifdef HPDF_DLL
void __stdcall
#else
void
#endif
error_handler (HPDF_STATUS error_no,
HPDF_STATUS detail_no,
void *user_data)
{
printf ("ERROR: error_no=%04X, detail_no=%u\n", (HPDF_UINT)error_no,
(HPDF_UINT)detail_no);
longjmp(env, 1);
}
int main (int argc, char **argv)
{
HPDF_Doc pdf;
HPDF_Font font;
HPDF_Page page;
char fname[256];
HPDF_Image image;
strcpy (fname, argv[0]);
strcat (fname, ".pdf");
pdf = HPDF_New (error_handler, NULL);
if (!pdf) {
printf ("error: cannot create PdfDoc object\n");
return 1;
}
/* error-handler */
if (setjmp(env)) {
HPDF_Free (pdf);
return 1;
}
font = HPDF_GetFont (pdf, "Helvetica", NULL);
page = HPDF_AddPage (pdf);
HPDF_Page_SetWidth (page, 550);
HPDF_Page_SetHeight (page, 500);
image = HPDF_LoadPngImageFromFile (pdf, "img.png");
HPDF_SaveToFile (pdf, fname);
HPDF_Free (pdf);
return 0;
}
When I compile this I have ERROR: error_no=1015, detail_no=0. I have found a similar post in stackoverflow: this. However although original poster said the problem is solved it hardly helped mine. I moved img.png to a folder and recompiled the file. Changed the code that says /home/name/path/to/img.png which is the direct path to image. Nothing works. I "always" have the same error, but when I change the name of file I have ERROR: error_no=1017, detail_no=2 which basicly means program cannot find image (according to reference of libharu) So I deduce that program finds img.png; but, it's strange but, cannot allocate the necessary memory. Which is weird because I cannot see any reason for this program not to allocate memory. I have every kind of permission.
I am using GCC 4.7.2 under Ubuntu Quantal Quetzal and libharu 2.3.0 RC2. Thank you for your help.
Hello Equalities of polynomials .
I also encountered the same problem when i integrated the haru sdk in my macOS environment.
The error_handler returned ERROR: error_no=1017, detail_no=2,and then i checked the official document for haru at http://libharu.sourceforge.net/error_handling.html query 0x1017 indicates that the file failed to open, so i suspect that the second parameter of the HPDF_LoadPngImageFromFile method needs to pass an exact png image file path, so after I modified it, the problem was solved, and I hope to help you.
code ad follow:
char filename1[255];
strcpy(filename1, "/Users/xx/Downloads/lusaceg.com.png");
image = HPDF_LoadPngImageFromFile (pdf, filename1);
Faithfully yours.