怎么在HOOK文件中建立Form之类的控件或者表单？？？

bahic 2003-12-12 12:35:49

我在HOOK.DLL中加入了一个Form1的表单。我的截获的消息是当按CTRL+L键时
Form1弹出来。再按一下CTRL+L键后Form1这个界面就消失！！
但不知道怎么才能做到这一点。

我的部份程如下:

LRESULT WINAPI Hook(int nCode,WPARAM wParam,LPARAM lParam)
{
if(wParam==0xA)
{
if(!Form_Init)
{
Form_Init=true;
{
Application->Initialize();
Application->CreateForm(__classid(Tgame), &game);
Application->Run();
}
}
if(run) //如果界面已经弹出来了就将它消失
{
game->Hide();
run=false;
}
else
{
game->Show(); //如果界面已经弹出来了就将它显示
run=true;
}
}

return(CallNextHookEx(g_hHook,nCode,wParam,lParam));
}

但我运行主程序时，程序在启动时要先弹出我的DLL中的界面，然后我将它关闭后才出现主程序的界面，当我按回车键时DLL中的界面是要弹出来，但再按一下时显示了一下界面就连主程序都退出去了。

如果有高手曾经写按一个键就弹出界面，再按一下界面就消失，就指教！！！
最后将源码给我看看。

最好给我一个小小的例程。

谢谢了

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myy 2003-12-17

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RegisterHotKey(Handle,2000,0,VK_F12);
^----楼主，俺对你实在是佩服！

BCB的help,希望你能好好看看，俺求你了......

The RegisterHotKey function defines a hot key for the current thread.

BOOL RegisterHotKey(

HWND hWnd, // window to receive hot-key notification
int id, // identifier of hot key
UINT fsModifiers, // key-modifier flags
UINT vk // virtual-key code
);

Parameters

hWnd

Identifies the window that will receive WM_HOTKEY messages generated by the hot key. If this parameter is NULL, WM_HOTKEY messages are posted to the message queue of the calling thread and must be processed in the message loop.

id

Specifies the identifier of the hot key. No other hot key in the calling thread should have the same identifier. An application must specify a value in the range 0x0000 through 0xBFFF. A shared dynamic-link library (DLL) must specify a value in the range 0xC000 through 0xFFFF (the range returned by the GlobalAddAtom function). To avoid conflicts with hot-key identifiers defined by other shared DLLs, a DLL should use the GlobalAddAtom function to obtain the hot-key identifier.

fsModifiers

Specifies keys that must be pressed in combination with the key specified by the nVirtKey parameter in order to generate the WM_HOTKEY message. The fsModifiers
parameter can be a combination of the following values:

Value Meaning
MOD_ALT Either ALT key must be held down.
MOD_CONTROL Either CTRL key must be held down.
MOD_SHIFT Either SHIFT key must be held down.

vk

Specifies the virtual-key code of the hot key.

Return Values

If the function succeeds, the return value is nonzero.
If the function fails, the return value is zero.

Remarks

When a key is pressed, the system looks for a match against all thread hot keys. Upon finding a match, the system posts the WM_HOTKEY message to the message queue of the thread that registered the hot key. This message is posted to the beginning of the queue so it is removed by the next iteration of the message loop.
This function cannot associate a hot key with a window created by another thread.
RegisterHotKey fails if the keystrokes specified for the hot key have already been registered by another hot key.

If the window identified by the hWnd parameter already registered a hot key with the same identifier as that specified by the id parameter, the new values for the fsModifiers and vk parameters replace the previously specified values for these parameters.

See Also

GlobalAddAtom, UnregisterHotKey, WM_HOTKEY

bahic 2003-12-17