How to run WndProc?
Blitz3D Forums/Blitz3D Programming/How to run WndProc?
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| Hello, I tried to embed a blitz3d program I wrote, in a c# program I wrote. I've done that by using the SetParent API, and giving the handle of a panel/other control. Now, I want the two program to send some text to each other, using the SendMessage API, but to recieve it, I need to catch it through the WndProc function. I know how to do that in c#, but I dont know how to do it blitz3d? Please Help, Thanks in advance. |
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| Anyone? I'm waiting about a day and a half already, and no reply... |
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| you need to subclass blitz3d's own winproc. its the way i done it while writing winblitz3d. |
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| I was going to reply yesterday but then I didn't know what to say. Now I can say: "you need to subclass blitz3d's own winproc." Maybe some relevant code would help. Edit: have a look at the code here: http://www.blitzbasic.com/Community/posts.php?topic=48244 |
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| I'd have thought it would have been simpler just to create a local TCP connection between the 2 apps... pretty much everyone now will have networking installed. |
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| maybe i should of explained a little, but did not have the time. still dont sorry! heres a stripped down version of my main WB3D_InitializeGUI() function for you to look over. look into SetWindowsHookEx() functions to get even more events from the api.
BBDECL HWND BBCALL API_InitializeGUI(HWND runtimewindow_Name,int x,int y,int width,int height){
runtimewindow = runtimewindow_Name;
if(!runtimewindow){
MessageBox(0,"Error","API_InitializeGUI",MB_OK);
}
lpOLDblitzproc = (WNDPROC) SetWindowLong(runtimewindow,GWL_WNDPROC,(LONG)GLOBAL_HOOKED_WINPROC);
lpInst = (HINSTANCE)GetModuleHandle(0);
if(!lpInst){
MessageBox(0,"lpInst error","lpInst handle",MB_OK);
}
// get blitz window style, add clip children style, so that controls are not blitted over
long winstyle = GetWindowLong(runtimewindow,GWL_STYLE);
SetWindowLong(runtimewindow,GWL_STYLE,winstyle | WS_CLIPCHILDREN);
gKBHook = SetWindowsHookEx(WH_GETMESSAGE,GLOBAL_HOOKED_MESSAGE_WINPROC,0,GetWindowThreadProcessId(runtimewindow,NULL));
wpBHook = SetWindowsHookEx(WH_CALLWNDPROC,GLOBAL_HOOKED_MESSAGE_WINPROC_2,0,GetWindowThreadProcessId(runtimewindow,NULL));
HookRET = SetWindowsHookEx(WH_CALLWNDPROCRET,GLOBAL_HOOKED_MESSAGE_WINPROC_RET,0,GetWindowThreadProcessId(runtimewindow,NULL));
HDWP r = BeginDeferWindowPos(1);
HDWP t = DeferWindowPos(r,runtimewindow,0,x,y,width,height,SWP_FRAMECHANGED | SWP_SHOWWINDOW | SWP_NOZORDER );
EndDeferWindowPos(r);
// get the window class name of the runtime window
if(!GetClassName(runtimewindow, szClassName, nMaxCount)){
MessageBox(NULL,"CLASS NAME ERROR","ERROR: Blitz Class Name",MB_OK);
return FALSE;
}else{
if(!GetClassInfoEx(GetModuleHandle(0), szClassName,&wc)){
MessageBox(NULL,"CLASS NAME ERROR","ERROR: Blitz Class Info",MB_OK);
return FALSE;
}else{
// set window background.
SetClassLong(runtimewindow, GCL_HBRBACKGROUND, (LONG) GetSysColorBrush(COLOR_BTNFACE));
// set window icon
SetClassLong(runtimewindow, GCL_HICON, (LONG) LoadIcon(lpInst, IDI_APPLICATION));
// set window cursor
SetClassLong(runtimewindow, GCL_HCURSOR, (LONG) LoadCursor(NULL, IDC_ARROW));
// set window winproc
SetClassLong(runtimewindow, GCL_WNDPROC,(long)GLOBAL_HOOKED_WINPROC);
WINPROC_CHANGED = 1;
}
}
return runtimewindow;
}
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| I was just about to post exactly what Kev posted, glad I don't have to now. ;) |
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| thank you very much, ill try to implement some of these codes, but I must to tell that I am very ashamed that I didn't thought about the TCP connection idea, but after thinking about it, it may cause some problems so ill kip the API idea. I never wrote an external DLL for Blitz, and if I got it right I should write this code on a DLL. So first:what does this means:"BBDECL HWND BBCALL ", and second, after compiling this DLL, How do I use it in blitz? thank you |
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| amitjf see blitz userlib specs, theres also an example of a vc++ .dll and blitz .decls http://www.blitzbasic.com/sdkspecs/sdkspecs.php |
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