How to display all environment variables and its values (C/C++)

#include<stdio.h>
int main(int argc, char* argv[], char* env[])
{
    int i=0;
    while(env[i])
    {
        printf("%s\n",env[i]);
        i++;
    }

    return 0;
}

Comments

Post a Comment

Popular posts from this blog

Creating tray application and popup context menu in Windows

If you want to add your application in system tray and popup a context menu #include<windows.h> #include "resource.h" HINSTANCE g_hInstance; const int WM_EX_MESSAGE = (WM_APP + 1); BOOL TrayIcon(HWND hWnd, HICON hIcon, DWORD msg) { NOTIFYICONDATA nid; ZeroMemory(&nid,sizeof(NOTIFYICONDATA)); nid.cbSize = sizeof(NOTIFYICONDATA); nid.hWnd = hWnd; nid.uID = IDI_ICON2; nid.uFlags = NIF_TIP | NIF_ICON | NIF_MESSAGE; nid.uCallbackMessage = WM_EX_MESSAGE; nid.hIcon = hIcon; lstrcpyn(nid.szTip, __TEXT("This is my tray app!"), 64); return Shell_NotifyIcon(msg,&nid); } void ContextMenu(HWND hwnd) { HMENU hmenu = LoadMenu(g_hInstance, MAKEINTRESOURCE(IDR_MENU2)); HMENU hmnuPopup = GetSubMenu(hmenu,0); SetMenuDefaultItem(hmnuPopup,IDOK,FALSE); POINT pt; GetCursorPos(&pt); TrackPopupMenu(hmnuPopup,TPM_LEFTALIGN,pt.x,pt.y,0,hwnd,NULL); DestroyMenu(hmnuPopup); DestroyMenu(hmenu); } BOOL CALLBACK APP_DlgProc(HWND hDlg, UINT uiMsg,
Read more

How to statically link applications to wxWidgets via Visual Studio 2008 and in Linux

Image
MS Windows Procedure: Build the wxWidgets as static   Uncompressed the source file “wxWidgets-2.8.12.tar.gz” Go to “..\wxWidgets-2.8.12\build\msw”  Right-click and open the file “wx.dsw” using Visual Studio 2008 Change the “Runtime Library” property value into “Multi-threaded (/MT)” Rebuild the solution as “Release” mode The libraries can be found in “..\wxWidgets-2.8.12\lib\vc_lib” Build the application to link with wxWidgets as static A dd e nvironment variable (for convinience) WX WIN and set the value to wherever your wxWidgets is located. Sample: c:\wxWidgets Open your application in Visual Studio 2008 and s witch the mode to “Release” “Preprocessor Definitions” must be set to: WIN32 __WXMSW__ _WINDOWS NOPCH _CRT_NONSTDC_NO_DEPRECATE            4. Change the “Runtime Library” property value into “Multi-threaded (/MT)”          5 . “Additional Library Dir
Read more

How to put an image to wxPanel using wxWidgets

Image
1. I created the class xOsdHeaderPanel 2. Must call the function wxInitAllImageHandlers(); 3. Create a wxBitmap object and call SetBackgroundBitmap(..) class xOsdHeaderPanel : public wxCustomBackgroundWindow<wxPanel> { public: xOsdHeaderPanel(wxWindow* parent)     { wxInitAllImageHandlers(); const wxSize xxsize(733,80);         Create(parent, wxID_ANY,wxDefaultPosition,xxsize); wxBitmap bitmap(*new wxImage(wxT("./Header.png"),wxBITMAP_TYPE_PNG)); SetBackgroundBitmap(bitmap); new wxButton(this,wxID_ANY,wxT("Sample Button"));     } }; Result:
Read more