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// ZeroSwitch.cpp : Defines the entry point for the DLL application.
//
#include "stdafx.h"
HINSTANCE hInst;
HHOOK hHook;
HWND hDummyWnd = nullptr, hHelperWnd = nullptr, hMirandaWnd = nullptr;
int hLangpack;
CLIST_INTERFACE *pcli;
PLUGININFOEX pluginInfo = {
sizeof(PLUGININFOEX),
__PLUGIN_NAME,
PLUGIN_MAKE_VERSION(__MAJOR_VERSION, __MINOR_VERSION, __RELEASE_NUM, __BUILD_NUM),
__DESCRIPTION,
__AUTHOR,
__COPYRIGHT,
__AUTHORWEB,
UNICODE_AWARE,
// {3F1657B1-69CB-4992-9CFC-226C808A5202}
{ 0x3f1657b1, 0x69cb, 0x4992, { 0x9c, 0xfc, 0x22, 0x6c, 0x80, 0x8a, 0x52, 0x2 } }
};
BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD, LPVOID)
{
hInst = hinstDLL;
return TRUE;
}
extern "C" __declspec(dllexport) PLUGININFOEX* MirandaPluginInfoEx(DWORD)
{
return &pluginInfo;
}
LRESULT CALLBACK HelperProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
switch (message)
{
case WM_ACTIVATE:
if (LOWORD(wParam) != WA_INACTIVE) // Helper window got activated
SetActiveWindow(hMirandaWnd);
break;
case WM_DESTROY:
if (hWnd == hHelperWnd)
hHelperWnd = nullptr;
else
hDummyWnd = nullptr;
break;
default:
return DefWindowProc(hWnd, message, wParam, lParam);
}
return 0;
}
void CreateHelperWnd()
{
WNDCLASSEX wcex;
// First we must check if Miranda's main window has the "Title bar" border style...
if ((GetWindowLongPtr(hMirandaWnd, GWL_STYLE) & WS_CAPTION) && !(GetWindowLongPtr(hMirandaWnd, GWL_EXSTYLE) & WS_EX_TOOLWINDOW))
return;
if (hHelperWnd)
return; // We need only one helper window
// Widows taskbar workaround
// We don't want our helper window to be displayed on Windows taskbar.
// So first of all we have to create an invisible window and then set it as
// parent to our window.
// Register windows class
wcex.cbSize = sizeof(WNDCLASSEX);
wcex.style = CS_HREDRAW | CS_VREDRAW;
wcex.lpfnWndProc = HelperProc;
wcex.cbClsExtra = 0;
wcex.cbWndExtra = 0;
wcex.hInstance = hInst;
wcex.hIcon = Skin_LoadIcon(SKINICON_OTHER_MIRANDA, true);
wcex.hCursor = nullptr;
wcex.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1);
wcex.lpszMenuName = nullptr;
wcex.lpszClassName = L"ZeroSwitchHlp";
wcex.hIconSm = Skin_LoadIcon(SKINICON_OTHER_MIRANDA);
if (NULL == RegisterClassEx(&wcex))
return; // wtf
hDummyWnd = CreateWindow(L"ZeroSwitchHlp", L"", WS_POPUP, 0, 0, 0, 0, nullptr, nullptr, hInst, nullptr);
if (!hDummyWnd)
UnregisterClass(L"ZeroSwitchHlp", hInst);
hHelperWnd = CreateWindow(L"ZeroSwitchHlp", L"Miranda NG", WS_OVERLAPPEDWINDOW | WS_VISIBLE, -100, -100, 90, 90, hDummyWnd, nullptr, hInst, nullptr);
if (!hHelperWnd)
{
DestroyWindow(hDummyWnd);
UnregisterClass(L"ZeroSwitchHlp", hInst);
}
}
void DestroyHelperWnd()
{
if (hHelperWnd)
{
DestroyWindow(hHelperWnd);
DestroyWindow(hDummyWnd);
UnregisterClass(L"ZeroSwitchHlp", hInst);
}
}
LRESULT CALLBACK CallWndRetProc(int nCode, WPARAM wParam, LPARAM lParam)
{
PCWPRETSTRUCT pMes;
if (nCode >= 0)
{
pMes = (PCWPRETSTRUCT)lParam; // Get message details
if (!hMirandaWnd)
hMirandaWnd = pcli->hwndContactList;
if (pMes->hwnd == hMirandaWnd)
{
if (pMes->message == WM_SHOWWINDOW) // We are interested only in this message
{
if (pMes->wParam == TRUE) // The window is being shown
CreateHelperWnd();
else
DestroyHelperWnd();
}
}
}
return CallNextHookEx(nullptr, nCode, wParam, lParam); // Pass the message to other hooks in chain
}
extern "C" int __declspec(dllexport) Load(void)
{
mir_getLP(&pluginInfo);
pcli = Clist_GetInterface();
if (IsWinVerVistaPlus()) {
MessageBox(nullptr, TranslateT("Plugin works under Windows XP only"), TranslateT("ZeroSwitch plugin failed"), MB_ICONSTOP);
return 1;
}
// Let's setup shop :)
hHook = SetWindowsHookEx(WH_CALLWNDPROCRET, CallWndRetProc, nullptr, GetCurrentThreadId());
if (hHook == nullptr)
MessageBox(nullptr, TranslateT("Oops, we've got a big hook error here :("), TranslateT("ZeroSwitch plugin failed"), MB_ICONSTOP);
return 0;
}
extern "C" int __declspec(dllexport) Unload(void)
{
if (hHook)
UnhookWindowsHookEx(hHook);
DestroyHelperWnd();
return 0;
}
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