#include <windows.h>
#include <stdio.h>
/* Declare Windows procedure */
LRESULT CALLBACK WindowProcedure (HWND, UINT, WPARAM, LPARAM);
/* Make the class name into a global variable */
char szClassName[ ] = "WindowsApp";
int WINAPI WinMain (HINSTANCE hThisInstance,
HINSTANCE hPrevInstance,
LPSTR lpszArgument,
int nFunsterStil)
{
HWND hwnd; /* This is the handle for our window */
MSG messages; /* Here messages to the application are saved */
WNDCLASSEX wincl; /* Data structure for the windowclass */
/* The Window structure */
wincl.hInstance = hThisInstance;
wincl.lpszClassName = szClassName;
wincl.lpfnWndProc = WindowProcedure; /* This function is called by windows */
wincl.style = CS_DBLCLKS; /* Catch double-clicks */
wincl.cbSize = sizeof (WNDCLASSEX);
/* Use default icon and mouse-pointer */
wincl.hIcon = LoadIcon (NULL, IDI_APPLICATION);
wincl.hIconSm = LoadIcon (NULL, IDI_APPLICATION);
wincl.hCursor = LoadCursor (NULL, IDC_ARROW);
wincl.lpszMenuName = NULL; /* No menu */
wincl.cbClsExtra = 0; /* No extra bytes after the window class */
wincl.cbWndExtra = 0; /* structure or the window instance */
/* Use Windows's default color as the background of the window */
wincl.hbrBackground = (HBRUSH) COLOR_BACKGROUND;
/* Register the window class, and if it fails quit the program */
if (!RegisterClassEx (&wincl))
return 0;
/* The class is registered, let's create the program*/
hwnd = CreateWindowEx (
0, /* Extended possibilites for variation */
szClassName, /* Classname */
"Windows App", /* Title Text */
WS_OVERLAPPEDWINDOW, /* default window */
CW_USEDEFAULT, /* Windows decides the position */
CW_USEDEFAULT, /* where the window ends up on the screen */
544, /* The programs width */
375, /* and height in pixels */
HWND_DESKTOP, /* The window is a child-window to desktop */
NULL, /* No menu */
hThisInstance, /* Program Instance handler */
NULL /* No Window Creation data */
);
/* Make the window visible on the screen */
ShowWindow (hwnd, nFunsterStil);
/* Run the message loop. It will run until GetMessage() returns 0 */
while (GetMessage (&messages, NULL, 0, 0))
{
/* Translate virtual-key messages into character messages */
TranslateMessage(&messages);
/* Send message to WindowProcedure */
DispatchMessage(&messages);
}
/* The program return-value is 0 - The value that PostQuitMessage() gave */
return messages.wParam;
}
/* This function is called by the Windows function DispatchMessage() */
LRESULT CALLBACK WndProc (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
static HMENU hMenu;
POINT point;
int iAuswahl;
char szText[64];
switch (message)
{
case WM_CREATE:
hMenu = CreatePopupMenu (); // Menu anlegen
// und rein mit den Einträgen.. Der 2te Parameter ist die ID des jew. Eintrages
InsertMenu (hMenu, 0, MF_BYPOSITION, 0, "Menueintrag");
InsertMenu (hMenu, 1, MF_BYPOSITION, 1, "Menueintrag");
InsertMenu (hMenu, 2, MF_SEPARATOR, 0, NULL); // Separator
InsertMenu (hMenu, 3, MF_BYPOSITION, 3, "Menueintrag");
return 0 ;
case WM_CONTEXTMENU: // jetzt könnte ein Contextmenu angezeigt werden sollen
// Koordinaten des Mauszeigers ermitteln
POINTSTOPOINT (point, lParam);
// Sind point.x und point.y == -1, so wurde die Nachricht
// als Ergebnis auf ein Tastatur-Ereignis gesendet.
if ((point.x == -1) && (point.y == -1))
{
point.x = point.y = GetSystemMetrics (SM_CXEDGE);
ClientToScreen (hwnd, &point); // Die Koordinaten auf unser Fenster legen
}
// WM_CONTEXTMENU nicht verarbeiten, wenn ein Rechtsklick
// in die Titelleiste vorliegt. Hier soll schließlich das
// Systemmenu angezeigt werden
else if (HTCLIENT != SendMessage (hwnd, WM_NCHITTEST, 0, lParam))
{
break;
}
// Das Menu an der Position des Mauszeigers anzeigen
iAuswahl = (int) TrackPopupMenu (hMenu, TPM_CENTERALIGN | TPM_LEFTBUTTON |
TPM_RETURNCMD, point.x, point.y, 0, hwnd, 0);
// Ausgabe welches Item gewählt wurde
sprintf (szText, "Itemnummer %d wurde ausgewählt", iAuswahl);
MessageBox (NULL, szText, "Nachricht", MB_OK);
return 0;
case WM_DESTROY:
DestroyMenu (hMenu); // Aufräumen
PostQuitMessage (0);
return 0;
}
return DefWindowProc (hwnd, message, wParam, lParam);
}
