reactos/rosapps/tests/subclass/subclass.c

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#include <windows.h>
#include <stdio.h>
LRESULT WINAPI UnicodeWndProc(HWND, UINT, WPARAM, LPARAM);
LRESULT WINAPI UnicodeSubclassProc(HWND, UINT, WPARAM, LPARAM);
LRESULT WINAPI AnsiSubclassProc(HWND, UINT, WPARAM, LPARAM);
static WNDPROC SavedWndProcW;
static WNDPROC SavedWndProcA;
int WINAPI
WinMain(HINSTANCE hInstance,
HINSTANCE hPrevInstance,
LPSTR lpszCmdLine,
int nCmdShow)
{
WNDCLASSW wc;
MSG msg;
HWND hWnd;
WCHAR WindowTextW[256];
char WindowTextA[256];
wc.lpszClassName = L"UnicodeClass";
wc.lpfnWndProc = UnicodeWndProc;
wc.style = 0;
wc.hInstance = hInstance;
wc.hIcon = NULL;
wc.hCursor = NULL;
wc.hbrBackground = NULL;
wc.lpszMenuName = NULL;
wc.cbClsExtra = 0;
wc.cbWndExtra = 0;
if (RegisterClassW(&wc) == 0)
{
fprintf(stderr, "RegisterClassW failed (last error 0x%X)\n",
GetLastError());
return 1;
}
printf("Unicode class registered, WndProc = 0x%08x\n", wc.lpfnWndProc);
hWnd = CreateWindowA("UnicodeClass",
"Unicode Window",
WS_OVERLAPPEDWINDOW,
0,
0,
CW_USEDEFAULT,
CW_USEDEFAULT,
NULL,
NULL,
hInstance,
NULL);
if (hWnd == NULL)
{
fprintf(stderr, "CreateWindowA failed (last error 0x%X)\n",
GetLastError());
return 1;
}
printf("Window created, IsWindowUnicode returns %s\n", IsWindowUnicode(hWnd) ? "TRUE" : "FALSE");
printf("Calling GetWindowTextW\n");
if (! GetWindowTextW(hWnd, WindowTextW, sizeof(WindowTextW) / sizeof(WindowTextW[0])))
{
fprintf(stderr, "GetWindowTextW failed (last error 0x%X)\n", GetLastError());
return 1;
}
printf("GetWindowTextW returned Unicode string \"%S\"\n", WindowTextW);
printf("Calling GetWindowTextA\n");
if (! GetWindowTextA(hWnd, WindowTextA, sizeof(WindowTextA) / sizeof(WindowTextA[0])))
{
fprintf(stderr, "GetWindowTextA failed (last error 0x%X)\n", GetLastError());
return 1;
}
printf("GetWindowTextA returned Ansi string \"%s\"\n", WindowTextA);
printf("\n");
SavedWndProcW = (WNDPROC) GetWindowLongW(hWnd, GWL_WNDPROC);
printf("GetWindowLongW returned 0x%08x\n", SavedWndProcW);
SavedWndProcA = (WNDPROC) GetWindowLongA(hWnd, GWL_WNDPROC);
printf("GetWindowLongA returned 0x%08x\n", SavedWndProcA);
printf("\n");
printf("Subclassing window using SetWindowLongW, new WndProc 0x%08x\n", UnicodeSubclassProc);
SetWindowLongW(hWnd, GWL_WNDPROC, (LONG) UnicodeSubclassProc);
printf("After subclass, IsWindowUnicode %s, WndProcA 0x%08x, WndProcW 0x%08x\n",
IsWindowUnicode(hWnd) ? "TRUE" : "FALSE", GetWindowLongA(hWnd, GWL_WNDPROC),
GetWindowLongW(hWnd, GWL_WNDPROC));
printf("Calling GetWindowTextW\n");
if (! GetWindowTextW(hWnd, WindowTextW, sizeof(WindowTextW) / sizeof(WindowTextW[0])))
{
fprintf(stderr, "GetWindowTextW failed (last error 0x%X)\n", GetLastError());
return 1;
}
printf("GetWindowTextW returned Unicode string \"%S\"\n", WindowTextW);
printf("\n");
printf("Subclassing window using SetWindowLongA, new WndProc 0x%08x\n", AnsiSubclassProc);
SetWindowLongA(hWnd, GWL_WNDPROC, (LONG) AnsiSubclassProc);
printf("After subclass, IsWindowUnicode %s, WndProcA 0x%08x, WndProcW 0x%08x\n",
IsWindowUnicode(hWnd) ? "TRUE" : "FALSE", GetWindowLongA(hWnd, GWL_WNDPROC),
GetWindowLongW(hWnd, GWL_WNDPROC));
printf("Calling GetWindowTextW\n");
if (! GetWindowTextW(hWnd, WindowTextW, sizeof(WindowTextW) / sizeof(WindowTextW[0])))
{
fprintf(stderr, "GetWindowTextW failed (last error 0x%X)\n", GetLastError());
return 1;
}
printf("GetWindowTextW returned Unicode string \"%S\"\n", WindowTextW);
DestroyWindow(hWnd);
return 0;
}
LRESULT CALLBACK UnicodeWndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
LRESULT Result;
switch(msg)
{
case WM_GETTEXT:
printf("UnicodeWndProc calling DefWindowProcW\n");
Result = DefWindowProcW(hWnd, msg, wParam, lParam);
printf("UnicodeWndProc Unicode window text \"%S\"\n", (LPWSTR) lParam);
break;
default:
Result = DefWindowProcW(hWnd, msg, wParam, lParam);
break;
}
return Result;
}
LRESULT CALLBACK UnicodeSubclassProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
LRESULT Result;
switch(msg)
{
case WM_GETTEXT:
printf("UnicodeSubclassProc calling SavedWindowProc\n");
Result = CallWindowProcW(SavedWndProcW, hWnd, msg, wParam, lParam);
printf("UnicodeSubclassProc Unicode window text \"%S\"\n", (LPWSTR) lParam);
break;
default:
Result = CallWindowProcW(SavedWndProcW, hWnd, msg, wParam, lParam);
break;
}
return Result;
}
LRESULT CALLBACK AnsiSubclassProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
LRESULT Result;
switch(msg)
{
case WM_GETTEXT:
printf("AnsiSubclassProc calling SavedWindowProcA\n");
Result = CallWindowProcA(SavedWndProcA, hWnd, msg, wParam, lParam);
printf("AnsiSubclassProc Ansi window text \"%s\"\n", (LPSTR) lParam);
break;
default:
Result = CallWindowProcA(SavedWndProcA, hWnd, msg, wParam, lParam);
break;
}
return Result;
}