/** A palavra de Deus ilumina nossa mente, e purifica nossos corações! */
#include <windows.h>
#include <stdlib.h>
#include "resource.h"
LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);
int WINAPI WinMain(HINSTANCE hI, HINSTANCE hPI, PSTR szCmdLine, int iCmdShow) {
static TCHAR nome[] = TEXT("PrintScreen");
HACCEL hAccel;
HWND hwnd;
MSG msg;
WNDCLASS wndclass;
wndclass.style = CS_HREDRAW | CS_VREDRAW;
wndclass.lpfnWndProc = WndProc;
wndclass.cbClsExtra = 0;
wndclass.cbWndExtra = 0;
wndclass.hInstance = hI;
wndclass.hIcon = LoadIcon(hI, IDI_ICON);
wndclass.hCursor = LoadCursor(NULL, IDC_ARROW);
wndclass.hbrBackground = (HBRUSH) GetStockObject(WHITE_BRUSH);
wndclass.lpszMenuName = nome;
wndclass.lpszClassName = nome;
if(!RegisterClass(&wndclass)) {
MessageBox(NULL, TEXT("Error!"), nome, MB_ICONERROR);
return 0;
}
hwnd = CreateWindow(
nome, T, WS_OVERLAPPEDWINDOW,
CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT,
NULL, NULL, hI, NULL
);
ShowWindow(hwnd, iCmdShow);
UpdateWindow(hwnd);
hAccel = LoadAccelerators(hI, nome);
while(GetMessage(&msg, NULL, 0, 0)) {
if(!TranslateAccelerator(hwnd, hAccel, &msg)) {
TranslateMessage(&msg);
DispatchMessage (&msg);
FreeConsole();
}
}
return msg.wParam;
}
void InvertBlock(HWND hwndScr, HWND hwnd, POINT ptBeg, POINT ptEnd) {
HDC hdc;
hdc = GetDCEx(hwndScr, NULL, DCX_CACHE | DCX_LOCKWINDOWUPDATE);
ClientToScreen(hwnd, &ptBeg);
ClientToScreen(hwnd, &ptEnd);
PatBlt(hdc,ptBeg.x,ptBeg.y,ptEnd.x-ptBeg.x,ptEnd.y-ptBeg.y,DSTINVERT);
ReleaseDC(hwndScr, hdc);
}
HBITMAP CopyBitmap(HBITMAP hBitmapSrc) {
BITMAP bitmap;
HBITMAP hBitmapDst;
HDC hdcSrc, hdcDst;
GetObject(hBitmapSrc, sizeof(BITMAP), &bitmap);
hBitmapDst = CreateBitmapIndirect(&bitmap);
hdcSrc = CreateCompatibleDC(NULL);
hdcDst = CreateCompatibleDC(NULL);
SelectObject(hdcSrc, hBitmapSrc);
SelectObject(hdcDst, hBitmapDst);
BitBlt(hdcDst,0,0,bitmap.bmWidth,bitmap.bmHeight,hdcSrc,0,0,SRCCOPY);
DeleteDC(hdcSrc);
DeleteDC(hdcDst);
return hBitmapDst;
}
LRESULT CALLBACK WndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam) {
static BOOL bCapturing, bBlocking;
static HBITMAP hBitmap;
static HWND hwndScr;
static POINT pb, ptE;
BITMAP bm;
HBITMAP hBitmapClip;
HDC hdc, hdcM;
int iEnable;
PAINTSTRUCT ps;
RECT rt;
switch(msg) {
case WM_LBUTTONDOWN:
if(!bCapturing) {
if(LockWindowUpdate(hwndScr = GetDesktopWindow())) {
bCapturing = TRUE;
SetCapture (hwnd);
SetCursor(LoadCursor(NULL, IDC_CROSS));
}
else
MessageBeep(0);
}
return 0;
case WM_RBUTTONDOWN:
if(bCapturing) {
bBlocking = TRUE;
pb.x = LOWORD(lParam);
pb.y = HIWORD (lParam) ;
ptE = pb;
InvertBlock(hwndScr, hwnd, pb, ptE);
}
return 0;
case WM_MOUSEMOVE:
if(bBlocking) {
InvertBlock(hwndScr, hwnd, pb, ptE);
ptE.x = LOWORD(lParam);
ptE.y = HIWORD(lParam);
InvertBlock(hwndScr, hwnd, pb, ptE);
}
return 0;
case WM_LBUTTONUP:
case WM_RBUTTONUP:
if(bBlocking) {
InvertBlock(hwndScr, hwnd, pb, ptE);
ptE.x = LOWORD(lParam);
ptE.y = HIWORD(lParam);
if(hBitmap) {
DeleteObject(hBitmap);
hBitmap = NULL;
}
hdc = GetDC(hwnd);
hdcM = CreateCompatibleDC(hdc);
hBitmap=CreateCompatibleBitmap(hdc,abs(ptE.x-pb.x),abs(ptE.y - pb.y));
SelectObject(hdcM, hBitmap);
StretchBlt(hdcM,0,0,abs(ptE.x-pb.x),abs(ptE.y-pb.y),hdc,pb.x,pb.y,ptE.x-pb.x,ptE.y-pb.y,SRCCOPY);
DeleteDC(hdcM);
ReleaseDC(hwnd, hdc);
InvalidateRect(hwnd, NULL, TRUE);
}
if(bBlocking || bCapturing) {
bBlocking = bCapturing = FALSE;
SetCursor(LoadCursor (NULL, IDC_ARROW));
ReleaseCapture();
LockWindowUpdate(NULL);
}
return 0;
case WM_INITMENUPOPUP:
iEnable=IsClipboardFormatAvailable((CF_BITMAP)?MF_ENABLED:MF_GRAYED);
EnableMenuItem((HMENU) wParam, IDM_EDIT_PASTE, iEnable);
iEnable = hBitmap ? MF_ENABLED : MF_GRAYED;
EnableMenuItem((HMENU) wParam, IDM_EDIT_CUT, iEnable);
EnableMenuItem((HMENU) wParam, IDM_EDIT_COPY, iEnable);
EnableMenuItem((HMENU) wParam, IDM_EDIT_DELETE, iEnable);
return 0;
case WM_COMMAND:
switch(LOWORD(wParam)) {
case IDM_EDIT_CUT:
case IDM_EDIT_COPY:
if(hBitmap) {
hBitmapClip = CopyBitmap(hBitmap);
OpenClipboard(hwnd);
EmptyClipboard();
SetClipboardData(CF_BITMAP, hBitmapClip);
}
if(LOWORD(wParam) == IDM_EDIT_COPY)
return 0;
case IDM_EDIT_DELETE:
if(hBitmap) {
DeleteObject(hBitmap);
hBitmap = NULL;
}
InvalidateRect(hwnd, NULL, TRUE);
return 0;
case IDM_EDIT_PASTE:
if(hBitmap) {
DeleteObject(hBitmap);
hBitmap = NULL;
}
OpenClipboard(hwnd);
hBitmapClip = GetClipboardData(CF_BITMAP);
if(hBitmapClip) {
hBitmap = CopyBitmap(hBitmapClip);
}
CloseClipboard();
InvalidateRect(hwnd, NULL, TRUE);
return 0;
}
break;
case WM_PAINT:
hdc = BeginPaint(hwnd, &ps);
if(hBitmap) {
GetClientRect(hwnd, &rt);
hdcM = CreateCompatibleDC(hdc);
SelectObject(hdcM, hBitmap);
GetObject(hBitmap, sizeof(BITMAP), (PSTR) &bm);
SetStretchBltMode(hdc, COLORONCOLOR);
StretchBlt(hdc,0,0,rt.right,rt.bottom,hdcM,0,0,bm.bmWidth,bm.bmHeight,SRCCOPY);
DeleteDC(hdcM);
}
EndPaint(hwnd, &ps);
return 0;
case WM_DESTROY:
if(hBitmap)
DeleteObject(hBitmap);
PostQuitMessage(0);
return 0;
}
return DefWindowProc(hwnd, msg, wParam, lParam);
}
/********************Arquivo: resource.h********************/
#define IDI_ICON 1
#define IDM_EDIT_CUT 40001
#define IDM_EDIT_COPY 40002
#define IDM_EDIT_PASTE 40003
#define IDM_EDIT_DELETE 40004
#define T "StretchBlt(hdcM,0,0,abs(ptE.x-pb.x),abs(ptE.y-pb.y),hdc,pb.x,pb.y,ptE.x-pb.x,ptE.y-pb.y,SRCCOPY);"
/********************Arquivo: resource.rc********************/
#include "resource.h"
#include "afxres.h"
IDI_ICON ICON "project1.ico"
PrintScreen MENU DISCARDABLE
BEGIN
POPUP "&Edit"
BEGIN
MENUITEM "Cu&t\tCtrl+X", IDM_EDIT_CUT
MENUITEM "&Copy\tCtrl+C", IDM_EDIT_COPY
MENUITEM "&Paste\tCtrl+V", IDM_EDIT_PASTE
MENUITEM "De&lete\tDelete", IDM_EDIT_DELETE
END
END
PrintScreen ACCELERATORS DISCARDABLE
BEGIN
"C", IDM_EDIT_COPY, VIRTKEY, CONTROL, NOINVERT
"V", IDM_EDIT_PASTE, VIRTKEY, CONTROL, NOINVERT
VK_DELETE, IDM_EDIT_DELETE, VIRTKEY, NOINVERT
"X", IDM_EDIT_CUT, VIRTKEY, CONTROL, NOINVERT
END
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