VC++ .NET and winapi

[Assassin]

I have a problem with managed c++. I try to use a ExitWindowsEx, winaipi function to turn off my computer, but a compiler doesn't find this function. Maybe somebody had the same problem ?

[Mick]

Do you have the platform SDK installed? You can find it on microsoft.com.

Also note:
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/winprog/winprog/using_the_windows_headers.asp


And finally:

You can use LoadLibrary(...)/GetProcAddress(...) if you need to.

[Assassin]

But which library I have to add, I truly don't know. Oh I instaled a SKD but compiler still has a C3861 error.

[Mick]

Go to tools->options [project and solutions] VC++ Directories and make sure the <SDK install dir>\include is at the top (under includes) and the <SDK install dir>\lib is at the top (under libs)

ExitWindowsEx is in winuser.h.

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/sysinfo/base/exitwindowsex.asp

So:
#include <windows.h>

You also need to link with user32.lib, so add it to your linker settings or add a pragma:
#pragma comment(lib,"user32")


WINUSERAPI
BOOL
WINAPI
ExitWindowsEx(
IN UINT uFlags,
IN DWORD dwReserved);

[Assassin]

Thank you , now it's working. I propably never guess way to repair it.

[Assassin]

I hava another problem, ehwn I try to add bacground picture to a button when I add picture in properties VC++ added line
this->pictureBox1->BackgroundImage = (__try_cast<System::Drawing::Image * >(resources->GetObject(S"pictureBox1.BackgroundImage")));

and compiler say :

d:\Visual Studio Projects\Programy\Wylacz Mnie\Form1.h(103): error C2039: 'GetObjectA' : is not a member of 'System::Resources::ResourceManager'

[Mick]

I hava another problem, ehwn I try to add bacground picture to a button when I add picture in properties VC++ added line
this->pictureBox1->BackgroundImage = (__try_cast<System::Drawing::Image * >(resources->GetObject(S"pictureBox1.BackgroundImage")));

and compiler say :

d:\Visual Studio Projects\Programy\Wylacz Mnie\Form1.h(103): error C2039: 'GetObjectA' : is not a member of 'System::Resources::ResourceManager'

Well because you are including <windows.h> you are picking up the macro defines for GetObject

Which translates to GetObjectA or GetObjectW.

use a push_macro/pop_macro in your form1.h

#pragma push_macro("GetObject")
#undef GetObject

[body of code]
...
...

#pragma pop_macro("GetObject")

[Assassin]

thanky you now it's working.