🚀 go-pugleaf

Nate Lockwood wrote:

>                  String sTitle = "Google Earth (C) Tool";
>                  String sMessage = "USDA.FS.FireScience.GooleEarthTool.Awake";
>                  Application->Title = sTitle + " Temporary";
>                  WM_MYMSG = RegisterWindowMessage(sMessage.c_str());

Why do you insist on using String for what should be a simple c-string
(char array) ?
	char sMessage[] = "USDA.FS.FireScience.GooleEarthTool.Awake";
	WM_MYMSG = RegisterWindowMessage(sMessage);
Or, simpler:

WM_MYMSG=RegisterWindowMessage("USDA.FS.FireScience.GooleEarthTool.Awake");


>     char * pBuf = "Second instance";
>
>     COPYDATASTRUCT MyCDS;
>     MyCDS.dwData = WM_MYMSG;      // unique identifier
>     MyCDS.cbData = strlen(pBuf) + 1;    // buffer size 1 -> no data
>     MyCDS.lpData = &pBuf;         // address of the data

You want a pointer to the data, not a pointer to a pointer to the
data.
     MyCDS.lpData = pBuf;         // address of the data


>//  in my main form .h

>     // This function is never called...
>void __fastcall TFormMain::WMCopyData(TWMCopyData &message)
>{
>   if(message.CopyDataStruct->dwData == WM_MYMSG)
>     {
>     Application->Restore();
>     Show();

Verify that it is never called, and not just called with "incorrect"
data:
	}else{	ShowMessage("WM_MYMSG is not correct");

>     }