Windows API and WinRT/Metro

 
#define _WIN32_WINNT 0x0500
 
#include "stdafx.h"
#include <Windows.h>
 

//This function simulates a keyboard button press and release. Argument is VirtualKey
//This function works fine, before the GetMessage() function is declared/called
void KeyDown(int vk){
 
	printf("Called KeyDown with parameter %d \n",vk);
 
	INPUT	Input[1];
 
	Input[0].type  = INPUT_KEYBOARD;
	Input[0].ki.wVk= vk;
 
	printf("Sending Input\n");
	SendInput(1, Input, sizeof(Input));
}
 

//This function is blocking and waiting for a message to arrive
void MessageLoop(){
	MSG msg = {0};
	while (GetMessage(&msg, NULL, 0, 0) != 0)
    {
 
		//if the arrived message is a hotkey event
        if (msg.message == WM_HOTKEY)
        {
			//some debugging
			printf("msg.message %d, msg.lParam %d, msg.wParam %d \n",msg.message,msg.lParam,msg.wParam);
 
			//press the numeric '1' on the keyboard - doesn't work
			KeyDown(97);
        }
 
		TranslateMessage(&msg);
		DispatchMessage(&msg);
    }
}
 
int main(int argc, char* argv[])
{
 
	//This part works, only when the GetMessage() function is in a separate function ex: MessageLoop----
	Sleep(3000);
	KeyDown(97);
 
	//Register an ALT-CTR-A hotkey with ID - 1. First argument is NULL to make the hotkey global (it is a hWnd)
	RegisterHotKey(
		NULL,
		1,
		MOD_CONTROL | MOD_ALT,
		0x41
	);  //0x41 is 'a'
 
	//Enter the message loop that blocks and waits for a message to arrive for this application
 
	//Note that if I put the 'while (GetMessage(&msg, NULL, 0, 0) != 0)' code here, 
	//instead of putting it in a separate function, 
	//the 'KeyDown(97)' call on the 2nd line of the main() function will not work !
	MessageLoop();
 
	//clean up
	UnregisterHotKey(NULL,1);
 
	return 0;
}
 

ref class DirectXBase abstract
{
public:
    DirectXBase();
 
    virtual void Render() = 0;
    virtual void Present();
    // ....

protected:
 
    Microsoft::WRL::ComPtr<ID2D1Factory1>           m_d2dFactory;
    Microsoft::WRL::ComPtr<ID2D1Device>             m_d2dDevice;
    Microsoft::WRL::ComPtr<ID2D1DeviceContext>      m_d2dContext;
    Microsoft::WRL::ComPtr<ID2D1Bitmap1>            m_d2dTargetBitmap;
    // ....
};