GetOpenFileName fails to init Dialog.

[Derailedzack]

I loaded a menu in a c application. Now CommDlg is complaining that it failed to init. Let me know if you need more files. This file is a modified version of the GDIDisplay.c from the Client(C Version). Why does GetOpenFileName fail to init a dialog?

#include "GDIDisplay.h"
#include<stdio.h>
#include"resource1.h"
OPENFILENAMEA ofn;
void GDI_DrawAll()
{
}

LRESULT CALLBACK GDI_Windowcallback(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam) // @suppress("No return")
{
	PAINTSTRUCT ps;
	HDC hdc = GetDC(hwnd);
	switch (msg)
	{

	case WM_CREATE:
	
	
		ofn.lStructSize = sizeof(ofn);
		ofn.hwndOwner = NULL;
		ofn.hInstance = GetModuleHandle(NULL);
		ofn.lpstrFilter = "*.*";
		ofn.lpstrFile = "";
			
			
		
		break;
	case WM_CLOSE:
		PostQuitMessage(0);
		break;
	case WM_PAINT:
		hdc = BeginPaint(hwnd,&ps);
		//SetRect(text_rect,0,0,0,0);
		SelectObject(hdc,LTGRAY_BRUSH);
		//Rectangle(hdc,text_rect->left,text_rect->top,text_rect->right,text_rect->bottom);
		//FillRect(hdc,text_rect,(HBRUSH)RGB(0,255,255));

		EndPaint(hwnd,&ps);
		break;
	case WM_COMMAND:
		if (wParam == ID_FILE_OPEN) {
			if (GetOpenFileName(&ofn) == 0) {
				printf("%i", CommDlgExtendedError());
			}
		}
		//printf("%i\n", wParam);
		break;
	default:
		return DefWindowProc(hwnd,msg,wParam,lParam);
	}
}

void GDI_CreateWin(int w, int h)
{
	WNDCLASSEX wnd_class;
	HMENU menu;
	wnd_class.cbSize = sizeof(wnd_class);
	wnd_class.style = CS_HREDRAW | CS_VREDRAW;
	wnd_class.lpfnWndProc = GDI_Windowcallback;
	wnd_class.hInstance = GetModuleHandle(NULL);
	wnd_class.cbClsExtra = 0;
	wnd_class.cbWndExtra = 0;
	wnd_class.hIcon = NULL;
	wnd_class.hCursor = NULL;
	wnd_class.hbrBackground = GetStockObject(DKGRAY_BRUSH);
	wnd_class.lpszMenuName = NULL;
	wnd_class.lpszClassName = "GDIWINDOW";
	wnd_class.hIconSm = NULL;
	if (RegisterClassExA(&wnd_class) == 0) {
		MessageBox(NULL, strerror(GetLastError()),"FATAL ERROR" ,MB_ICONERROR);
		PostQuitMessage(-1);
	}
	


	hwnd = CreateWindow("GDIWINDOW", "Test", WS_OVERLAPPEDWINDOW | WS_VISIBLE , CW_USEDEFAULT, CW_USEDEFAULT, 640, 480, NULL, NULL, GetModuleHandle(NULL), NULL);
	menu = LoadMenu(GetModuleHandle(NULL), MAKEINTRESOURCE(IDR_MENU1));
	if (menu == NULL) {
		printf("%i", GetLastError());
		//MessageBox(NULL, strerror(GetLastError()), "FATAL ERROR", MB_ICONERROR);
	}
	else {
		SetMenu(hwnd, menu);
	}

	
}


void GDI_EVENT_LOOP()
{
	MSG msg;
	while (GetMessage(&msg, NULL, 0, 0)) {
		TranslateMessage(&msg);
		DispatchMessage(&msg);
	}
	UpdateWindow(hwnd);
}
void GDI_ShowWin() {
	//ShowWindow(hwnd, 5);

}

[Derailedzack]

Should I post this somewhere else?

[Derailedzack]

It might be better to post this on stackoverflow.