Set Text on WM_KEYDOWN

[wey97]

On WM_KEYDOWN I am setting the text of a label like so:

case WM_KEYDOWN:
     setText((int)wParam);
     break;

void setText(int x){
	LPTSTR ItemText;
	ItemText = new TCHAR[50];
	GetWindowText(hwndStatic, ItemText, 50);
	char c = (char)x;
	char* a = new char[2];
	a[0] = c;
	a[1] = '\0';
	strcat(ItemText, a);
	SetWindowText(hwndStatic, ItemText);
	delete[] ItemText;
	delete[] a;	
}

This seems to work well for digits and letters but nothing else.
What is a better way to code this?